Hridaya opened her piggy bank and found coins of denomination ₹1, ₹2, ₹5 and ₹10 in the ratio 10 : 5 : 2 : 1. If there are 72 coins in all, then how much money (in ₹) was there in the piggy bank in the form of coins?
Answer & explanation
Correct answer: option 3
Denominations ₹1 : ₹2 : ₹5 : ₹10
No. of coins 10 : 5 : 2 : 1 ⇒ 18R = 72
R = 4
Total money = denomination x no. of coins
= (1 x 40) + (2 x 20) + (5 x 8) + (10 x 4)
= 40 + 40 + 40 + 40 = 160