Question

Rama has only 10 paise and 25 paise coins in her purse. If in all she has 60 coins worth Rs 8.25, how many coins of each denomination does she have?​

Answer 1

Answer:

let the number of 10paisa coin=x

let the number of 25 paisa coin=y

X+y=60 --------eq(1)

Also 1/10x+1/4y=8.25 multiply both sides by 100

10X+25y=825-------eq(2)

multiply eq(1) by10

10x+10y=600---------eq(3

on solving 2and 3

15y=225

y=225/15

y=15

therefore X=45