RS Aggarwal Class 7 Math Eighth Chapter Ratio and Proportion Exercise 8C Solution EXERCISE 8C OBJECTIVE QUESTIONS Mark (√) against the correct answer in each of the following: (1) If a : b = 3 : 4 and b : c = 8 : 9, then a : c = ? Ans: (d) a : […]
RS Aggarwal Class 7 Math Eighth Chapter Ratio and Proportion Exercise 8B Solution EXERCISE 8B (1) Show that 30, 40, 45, 60 are in proportion. Solution: We have, Product of extremes = (30 × 60) = 1800 Product of means = (40 × 45) = 1800. ∴ Product of extremes = Product of means. Hence, […]
RS Aggarwal Class 7 Math Eighth Chapter Ratio and Proportion Exercise 8A Solution EXERCISE 8A (1) Express each of the following rations in simplest form: (i) 24 : 40 = (24 ÷ 8) : (40 ÷ 8) = 3 : 5 (ii) 13.5 : 15 = 135 : 150 = (135 ÷ 15) : (150 […]
NCERT Class 6 Mathematics Twelfth Chapter Ratio And Proportion Exercise 12.3 Solution EXERCISE 12.3 (1) If the cost of 7 m of cloth is Rs 1470, find the cost of 5 m of cloth. (2) Ekta earns Rs 3000 in 10 days. How much will she earn in 30 days? (3) If it has rained […]
NCERT Class 6 Mathematics Twelfth Chapter Ratio And Proportion Exercise 12.2 Solution EXERCISE 12.2 (1) Determine if the following are in proportion. (a) 15, 45, 40, 120 Solution: We know, 1st term × 4th term = 2nd term × 3rd term So, 15 × 120 = 45 × 40 Or, 1800 = 1800 Ans: Yes […]
NCERT Class 6 Mathematics Twelfth Chapter Ratio And Proportion Exercise 12.1 Solution EXERCISE 12.1 (1) There are 20 girls and 15 boys in a class. (a) What is the ratio of number of girls to the number of boys? Ans: 20 : 15 = 4 : 3 (b) What is the ratio of number of […]
