Question

A sum of Rs. 36.90 is made up of 180 coins which are either 10 paise coins or 25 p coins. The number of 10 p coins is:

• A. 54
• B. 45
• C. 126
• D. 154
• E. none

Answer 1

The correct option is A

54

Let x be the number of 10p coins

$So,0.1x+(180-x)0.25=36.9$

$So,8.1x=0.15x$

$So,x=54$