Question

80 coins add up to give a sum total of Rs. 6.40, where the coins are of either 10 paise or 5 paise. How many coins are of 5 paise?

• A. 36
• B. 24
• C. 32
• D. 18
• E. 28

Answer 1

The correct option is C

32

$\text{Average value per coin}=\frac{640}{80}=8p$

10 – paise coin : 5 – paise coin = 3:2

$\therefore 5-\text{paise coins}=\frac{80}{5}\times 2=32$