Question

A bag contains a number of 10 20 25 paise coins in the ratio of 7:4:3. if the money value comes to be 90. the number of 25 paise coins in the bag is

Answer 1

ratio is 7:4:3
so 7*10:4*20:3*25
70x + 80x + 75x = 90*100. (since 1 rs = 100 paise)

solving we get
x = 40
don't forget x is ratio constant
so no of 25 paise coin is 4* 40
ans is 160