# concise mathematics class 7 ratio and proportion

(ii) the share of A and the share of B. MCQ Questions for Class 6 Maths with Answers were prepared based on the latest exam pattern. Trigonometric ratios of 180 degree plus theta. Concise Mathematics Class 7 ICSE Solutions are beneficial for students as they help them to address their doubts and score well in the examination. Simple Interest. Solution: HCF of 66 and 18 is 6. Divide 64 cm long string into two parts in the ratio 5 : 3. is 16. Answer: Ratio between two numbers = 10 : 11 Sum of ratios = 10 + 11=21 Total sum = 168 ∴first number = $$\frac { 168 }{ 21 }$$x 10 =80 Second number = $$\frac { 168 }{ 21 }$$x 11 =88 Ans. Answer: A’s age = 6 years 8 months = 6 x 12 + 8 = 72 + 8 = 80 months B’s age = 7 years 4 months = 7 x 12 + 4 = 84 + 4 = 88 months ∴ Ratio between them = 80 : 88 = 10 : 11 Amount = Rs. Exercise 7c Selina Solutions Concise Maths Class 10 Chapter 7 Ratio and Proportion Exercise 7 (C) Some important properties of proportion like invertendo, alternendo, componendo, dividendo and other direct applications are the concepts discussed in this exercise. Question 17. ICSE SolutionsSelina ICSE SolutionsML Aggarwal Solutions. A plot of land, 600 sq m in area, is divided between two persons such that the first person gets three-fifth of what the second gets. Price of refrigerator = ₹15000. A rectangular field is 100 m by 80 m. Find the ratio of Question 15. 720 is divided between x and y in the ratio 4:5. 400. Answer, Find the mean proportional between Two numbers are in the ratio 5 : 7. The angles of a triangle are in the ratio 3 :2 : 7. Answer: Ratio between two quantities = 3 : 4 Sum of ratio = 3+4 = 7 ∴ Second quantity = Rs. Visit official Website CISCE for detail information about ICSE Board Class-7. A line is divided in two parts in the ratio 2.5 : 1.3. At a particular time, the ratio between the lengths of their shadows is 2 :3. What part of the whole class are girls. Access free … Answer: Ratio between the prices of scooter and a refrigerator = 4:1 Cost price of scooter = ₹45,000 Let the cost of scooter = 4x Cost of refrigerator = 1x According to condition, Cost of scooter > Cost of refrigerator ⇒ 4x- 1x = 45000 ⇒ 3x = 45000 x = $$\frac { 45000 }{ 3}$$ ⇒ x = ₹15000 .’. Find the ratio between : (i) the weights of metals A and B in the alloy. Question 22. Express each of the given ratio in its simplest form : Question 2. (ii) 1.5: 2.5. Solution: a : b = 3 : 5. Question 5. Selina Publishers Concise Mathematics for Class 7 ICSE Solutions all questions are solved and explained by expert mathematic teachers as per ICSE board guidelines. ML Aggarwal CBSE Solutions Class 7 Math 7th Chapter Ratio and Proportion Exercise 7.1 (1) Express the following ratios in simplest form: (i) 1/6:1/9 (ii) 9/2:9/8 (iii) 1/5:1/10:1/15 (2) Find the ratio of each of the following in simplest form: (i) Rs. Answer, Two poles of different heights are standing vertically on a horizontal field. Find the fourth proportional to: (i) 1.5, 4.5 and 3.5 (ii) 3a, 6a2 and 2ab2. 2400, what is the cost of 50 m cloth? 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Ratio and Proportion Exercise 6A – Selina Concise Mathematics Class 7 ICSE Solutions. (2) If 8 ball pens cost Rs. 1080. The ratio between two quantities is 3 : the first is Rs. Question 13. Check the below NCERT MCQ Questions for Class 6 Maths Chapter 12 Ratio and Proportion with Answers Pdf free download. Answer: Let the first number be 5x and second number be 9x H.C.F. 810, find the second. Question 1. Question 1. Question 19. is divided between A and B in such a way that A gets half of B. (a) A length of 6 cm to a length of 8 cm. Rs. The population of a town is ’ 50,000, out of which males are $$\frac { 1 }{ 3 }$$ of the whole population. Solution: Their difference is 10. Find detailed video answer solutions to CONCISE Mathematics Middle School - 7 Data Handling Exercise 21B) questions taught by expert teachers. ML Aggarwal Class 7 Solutions for ICSE Maths Chapter 6 Ratio and Proportion Ex 6.2 July 16, 2020 by Prasanna Leave a Comment ML Aggarwal Class 7 Solutions Chapter 6 Ratio and Proportion Ex 6.2 for ICSE Understanding Mathematics acts as the best resource during your learning and helps you score well in your exams. Solution: Question 2. 11. The angles of a triangle are in the ratio 3 :2 : 7. Solution: Question 2. Ratio and Proportion Exercise 6B – Selina Concise Mathematics Class 7 ICSE Solutions. Total amount = Rs. If the scooter costs ₹45,000 more than the refrigerator, find the price of the refrigerator. Question 1. The sum of three numbers, whose ratios are 3  : 4  : 6  is 4917.Find the numbers. Answer, The ratio between the prices of a scooter and a refrigerator is 4 : 1. Question 2. If a : b = 3 : 5, find (3a + 5b): (7a – 2b). Find the third proportional of Solution: Question 4. = 11 : … Convert the ratio 66 : 18 in its simplest form. Find the value of x in each of the following such that the given numbers are in proportion. Answer: Given, Ratio in two numbers = 4:7 and their L.C.M. Answer, The ratio between two numbers is 5 : 9. At a particular time, the ratio between the lengths of their shadows is 2 :3. Free download of step by step solutions for class 10 mathematics chapter 7 - Ratio and Proportion (Including Properties and Uses) of ICSE Board (Concise - Selina Publishers). Answer: Total weight of A and B metals = 10 gm A’s weight = 7.5 gm B’s weight = 10 – 7.5 = 2.5 gm, (i) Ratio between A and B = 7.5 : 2.5 = $$\frac { 75 }{ 10 }$$ : $$\frac { 25 }{ 10 }$$ =3:1, (ii) Ratio between B and total alloy = 2.5 : 10 = $$\frac { 25 }{ 10 }$$ : 10 ⇒ 25 : 100 = 1 : 4. Find the fourth proportional of, Question 3. Download Class 7 Concise Mathematics ICSE Solutions – Free PDF Chapter-wise. Trigonometric ratios of 180 degree plus theta. (c) A volume of 26 litres to a volume of 65 litres. Answer, Check whether the following quantities form a proportion or not ? Their sum is 168. Answer: A’s investment = Rs. is 16. Question 9. 40,000 respectively. (iv) 40 … New Learning Composite Mathematics SK Gupta Anubhuti Gangal Class 7 Ratio and Proportion and Unitary Method Self Practice 7C Solution (1) If 30 m of cloth cost Rs. Trigonometric ratios of 90 degree plus theta. (ii) 12,15,18 and 20 ? Express each of the given ratios in its simplest form: (i) 22: 66. Also, find the ratio of the number of females to the whole population. Answer, Three persons start a business and spend Rs. Find detailed video answer solutions to CONCISE Mathematics Middle School - 7 Ratio and Proportion Including Sharing in a Ratio) questions taught by expert teachers. Answer, If x: y – 5 :4 and 2 : x = 3 :8, find the value of y. Answer, is divided between A and B in such a way that A gets half of B. Find the share of each. Trigonometric ratios of 270 degree minus theta. APlusTopper.com provides step by step solutions for Selina Concise ICSE Solutions for Class 7 Mathematics. Answer, A plot of land, 600 sq m in area, is divided between two persons such that the first person gets three-fifth of what the second gets. is 168, find the numbers. All exercise questions are solved & explained by expert teacher and as per ICSE board guidelines. Answer: Ratio in angles of a triangle = 3:2:7 Sum of ratios = 3 + 2 + 7=12 Sum of angles of a triangle = 180° ∴ First angle = $$\frac { 3 }{ 12 }$$x 180°= 45° Second angle = $$\frac { 2 }{ 12 }$$ x 180°= 30° Third angle = $$\frac { 7 }{ 12 }$$ x 180°= 105°. Question 6. If the smaller one is 35T cm, find the length of the line. Basic concepts of ratio and proportion studied in earlier classes are continued with more in-depth knowledge in this chapter. Selina solutions for Concise Maths Class 10 ICSE chapter 7 (Ratio and Proportion (Including Properties and Uses)) include all questions with solution and detail explanation. = 16 ⇒ x = 16 ∴Required numbers = 5x and 9x = 5×16 and 9×16 = 80 and 144. Find : (i) the ratio between the shares of A and B. Answer: Ratio between two numbers = 5:7 Difference = 7-5 = 2 If difference is 2, then first number = 5 and if difference is 10, then first number = $$\frac { 5 }{ 2 }$$ x 10=25 and second number = $$\frac { 7 }{ 2 }$$ x 10 = 35. Chapter 1 Integers; Chapter 2 Rational Numbers; Chapter 3 Fractions (Including Problems) Chapter 4 Decimal Fractions (Decimals) Chapter 5 Exponents (Including Laws of Exponents) Chapter 6 Ratio and Proportion (Including Sharing in a Ratio) Answer: Ratio between two parts of a line = 2-5 : 1-3 =25 : 13 Sum of ratios = 25 + 13 = 38 Length of smaller part = 35.1 cm 38 Now length of line = $$\frac { 38 }{ 13 }$$ x 35.1 cm = 38 x 2.7 cm = 102.6 cm. Find each angle. Find the third proportional of, Question 4. If the height of the smaller pole is 7.5 m, find the height of the other pole. Find the mean proportional between. Also, find the ratio of the number of females to the whole population. 270 x 4 = Rs. Question 11. (i) the ratio between the shares of A and B. Find each angle. If x: y = 4: 7, find the value of (3x + 2y): (5x + y). We have provided Ratio and Proportion Class 6 Maths MCQs Questions with Answers to help students understand the concept very well. A rectangular field is 100 m by 80 m. Find the ratio of (i) length to its breadth (ii) breadth to its perimeter. Question 3. (ii) the weight of metal B and the weight of the alloy. 720 is divided between x and y in the ratio 4:5. Trigonometric ratios of 180 degree minus theta. Learn Insta try to provide online math tutoring for you. The sum of three numbers, whose ratios are 3 $$\frac { 1 }{ 3 }$$ : 4 $$\frac { 1 }{ 5 }$$ : 6 $$\frac { 1 }{ 8 }$$ is 4917.Find the numbers. (i) the weights of metals A and B in the alloy. (i) length to its breadth Ten gram of an alloy of metals A and B contains 7.5 gm of metal A and the rest is metal B. Their difference is 10. Concise Ratio and Proportion Solution Chapter-7 Selina Maths The Solution of Concise Mathematics Chapter 7 Ratio and Proportion for ICSE Class 10 have been solved by experience teachers from across the globe to help students of class 10th ICSE board exams conducted by the ICSE (Indian Council of Secondary Education) board papering in 2020. 14,400 in a year. This will clear students doubts about any question and improve application skills while preparing for board exams. Find the value of x, when 2.5 : 4 = x : 7.5. If the smaller one is 35T cm, find the length of the line. Question 7. Answer: Total population = 180,000 Population of males = $$\frac { 1 }{ 3 }$$ of 180,000 = 60,000 ∴ Population of females = 180,000 – 60,000 = 120,000 Ratio of females to whole population = 120,000 : 180,000 = 2:3.