Using only 2, 5, 10, 25, and 50 paisa coins, what will be the minimum number of coins
Using only 2, 5, 10, 25, and 50 paisa coins, what will be the minimum number of coins required to pay exactly 78 paise, 69 paise and Rs. 1.01 to three different persons?
- 17
- 18
- 19
- 20
Answer
For 69 paise, 1*50 + 1*10 + 1*5 + 2*2 = 5 coins
For 78 paise, 1*50 + 2*10 + 4*2 = 7 coins
For 101 paise, 1*50 + 1*25 + 2*10 + 3*2 = 7 coins
Total minimum coins required = 5 + 7 + 7 = 19
The correct option is C.