Question

Rajat has as many two-rupee coins as he has five-rupee coins. If he has in all a sum of
₹ 77, how many coins of each denomination does he have?

Answer 1

if he has 10coins of 5rs = 50rs

and as many 2rs coins= 20rs

adding both we get 70rs

if we add one more 5rs coin and 2rs coin it will be 77rs

therefore we need 11coins of each