Question

There are some 50 paisa and some 25 paisa coins in a bag. If the total number of coins is 30 and their total value is Rs 11, Find the number of coins of each kind.

Answer 1

Step-by-step explanation:

let x and y be the no. of 50 paisa and 25 paisa respectively

given; x+y=30--------(1)

0.5x+0.25y=11 -------(2)

multiplying( 2) by 2

x+ 0.5y=22. ------(3)

eqn (1) - (3), we get

0.5y=8

y=8/0.5.

y=16

fron (1). x=30-16

x=14

therefore, no. of 50 paisa coins=14

and number of 25 paisa coins=16