PSLE At first, Lucy had 85 buttons and some coins. After she gave away 54 buttons and 60% of the coins, she had a total of 51 buttons and coins. How many coins did Lucy have at first?
|
Buttons |
Coins |
Total |
Before |
85 |
5 u |
|
Change |
- 54 |
- 3 u |
|
After |
31 |
2 u |
51 |
60% =
60100 =
35 Number of buttons that Lucy left
= 85 - 54
= 31
Number of coins that Lucy left
= 51 - 31
= 20
2 u = 20
1 u = 20 ÷ 2 = 10
Number of coins that Lucy had at first
= 5 u
= 5 x 10
= 50
Answer(s): 50