PSLE At first, Tina had 58 stamps and some erasers. After she gave away 39 stamps and 25% of the erasers, she had a total of 46 stamps and erasers. How many erasers did Tina have at first?
|
Stamps |
Erasers |
Total |
Before |
58 |
4 u |
|
Change |
- 39 |
- 1 u |
|
After |
19 |
3 u |
46 |
25% =
25100 =
14 Number of stamps that Tina left
= 58 - 39
= 19
Number of erasers that Tina left
= 46 - 19
= 27
3 u = 27
1 u = 27 ÷ 3 = 9
Number of erasers that Tina had at first
= 4 u
= 4 x 9
= 36
Answer(s): 36