Hridaya opened her piggy bank and found coins of denomination Rs1, Rs2, Rs5 and Rs10 in ratio 10: 5 : 2 : 1. If there are 72 coins in all , then how much money (in Rs) was there in the piggy bank in the form of coins?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 160
Given :
Denomination of Rs1, Rs2, Rs5 and Rs10 in ratio 10: 5 : 2 : 1
Total number of coins = 72
Calculations :
Let the number of Rs1, Rs2, Rs5 and Rs10 coins be 10x, 5x, 2x and x.
⇒ 10x + 5x + 2x + x = 72
⇒ 18x = 72
⇒ x = 4
Number of coins of Rs1, Rs2, Rs5 and Rs10 are 40, 20, 8 and 4.
Total money in piggy bank
⇒ (40 × 1) + (20 × 2) + (8 × 5) + (4 × 10)
⇒ 40 + 40 + 40 + 40
⇒ Rs 160