Question

Aravind has a kiddy bank. It is full of one-rupee and fifty paise coins. It contains $3$ times as many fifty paise coins as one rupee coins. The total amount of the money in the bank is Rs.$35$. How many coins of each kind are there in the bank?

Answer 1

Let the number of one rupee coin be $x$.

So, number of fifty paise coin is $3x$.

Total amount $S=Rs.35$

So, $35=x\times 1+0.5\times 3x$

$⟹x=14$

So, there are $14$ one rupee coins and $42$ fifty paise coins in the bank.