1. Determine if the following are in proportion. (a) 15, 45, 40, 120 (b) 33, 121, 9,96 (c) 24, 28, 36, 48 (d) 32, 48, 70, 210 (e) 4, 6, 8, 12 (f) 33, 44, 75, 100 Solutions: (a) 15, 45, 40, 120 \({15 \over 45} = {1 \over…
1. If the cost of 7 m of cloth is ₹ 1470, find the cost of 5 m of cloth. Solutions: Cost of 7 m cloth = ₹ 1470 Cost of 1 m cloth = \(1470 \over 7\) = ₹ 210 So, cost of 5 m cloth = 210 × 5 = 1050 ∴ Cost of 5 m cloth is …
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? (b) What is the ratio of number of girls to the total number of students in the class? Solutions: Number of girls…
