Q .The bag contains 25 paise, 10 paise and 5 paise coins in the ratio 3 : 4 : 5. if there total value is Rs 35 . Find the number of 5 paise coins.

Ratio of 25 : 10 : 5 = 3x : 4x : 5x

Ratio of value 25 : 10 : 5 = 3x * 25 : 4x * 10 : 5x * 5

Ratio of value 25 : 10 : 5 = 75x : 40x : 25x

Rs 35 = 140x

14000 paise= 140x

14000 / 140 = x

100 = x

Number of 5 paise coins = 5x = 500