Question

70 coins of 10paisa and 50paisa are kepy in a purse if the total money in the purse is rs 19 fimd the no of each type of coins

Answer 1

number of 50p = x

number of 10p = 70 - x

total rupee = 19

0.5x + 0.1(70-x) = 19

0.5 + 7 - 0.1x = 19

0.4x = 19 - 7

x = 120/4 = 30

number of 50p = x 30

number of 10p = 70 - x = 40