Question

A boy has equal number of coins of denomination 5 paise, 10 paise and 50 paise. If he has Rs. 13 in all, find the total number of coins he has?

Answer 1

let x be the number of each type of coin.
We know,
100 p=1 rupee
Converting all the coins into rupees
The boy has,
x coins of 0.05 rupees
x coins of 0.10 rupees
and
x coins of 0.50 rupees
Now, ATQ,
13 RS=0.05x+0.10x+0.50x
13Rs=0.65x
x=13/0.65
x=130/65
x=2