PSLE At first, Tammy had 80 coins and some buttons. After she gave away 48 coins and 60% of the buttons, she had a total of 48 coins and buttons. How many buttons did Tammy have at first?
|
Coins |
Buttons |
Total |
Before |
80 |
5 u |
|
Change |
- 48 |
- 3 u |
|
After |
32 |
2 u |
48 |
60% =
60100 =
35 Number of coins that Tammy left
= 80 - 48
= 32
Number of buttons that Tammy left
= 48 - 32
= 16
2 u = 16
1 u = 16 ÷ 2 = 8
Number of buttons that Tammy had at first
= 5 u
= 5 x 8
= 40
Answer(s): 40