type 9 coins & rupees based ratio & proportion problems Section-Wise Topic Notes With Detailed Explanation And Example Questions

Question : 1

The salaries of A, B and C are in the ratio 1 : 3 : 4. If the salaries are increased by 5%, 10% and 15% respectively, then the increased salaries will be in the ratio

a) 21 : 66 : 92

b) 19 : 66 : 92

c) 21 : 66 : 95

d) 20 : 66 : 95

Question : 2

There are 480 coins in half rupees, quarter rupees and 10 paise coins and their values are proportional to 5 : 3 : 1. The number of coins in each case are

a) 150, 180, 150

b) 300, 90, 90

c) 50, 30, 400

d) 100, 200, 180

Question : 3

A box contains 280 coins of one rupee, 50-paise and 25-paise. The values of each kind of the coins are in the ratio of 8 : 4 : 3. Then the number of 50-paise coins is

a) 80

b) 90

c) 60

d) 70

Question : 4

A box has 210 coins of denominations one-rupee and fifty paise only. The ratio of their respective values is 13 : 11. The number of one-rupee coins is

a) 77

b) 78

c) 66

d) 65

Question : 5

If 378 coins consist of rupees, 50 paise and 25 paise coins, whose values are in the ratio of 13 : 11 : 7, the number of 50 paise coins will be :

a) 136

b) 133

c) 128

d) 132

Question : 6

There are 225 consisting of one rupee, 50 paise and 25 paise coins. The ratio of their numbers in that order is 8 : 5 : 3. The number of one-rupee coins is :

a) 160

b) 172

c) 112

d) 80