PSLE At first, Sabrina had 96 cards and some erasers. After she gave away 86 cards and 25% of the erasers, she had a total of 40 cards and erasers. How many erasers did Sabrina have at first?
|
Cards |
Erasers |
Total |
Before |
96 |
4 u |
|
Change |
- 86 |
- 1 u |
|
After |
10 |
3 u |
40 |
25% =
25100 =
14 Number of cards that Sabrina left
= 96 - 86
= 10
Number of erasers that Sabrina left
= 40 - 10
= 30
3 u = 30
1 u = 30 ÷ 3 = 10
Number of erasers that Sabrina had at first
= 4 u
= 4 x 10
= 40
Answer(s): 40