PSLE At first, Hazel had 60 erasers and some pens. After she gave away 13 erasers and 60% of the pens, she had a total of 65 erasers and pens. How many pens did Hazel have at first?
|
Erasers |
Pens |
Total |
Before |
60 |
5 u |
|
Change |
- 13 |
- 3 u |
|
After |
47 |
2 u |
65 |
60% =
60100 =
35 Number of erasers that Hazel left
= 60 - 13
= 47
Number of pens that Hazel left
= 65 - 47
= 18
2 u = 18
1 u = 18 ÷ 2 = 9
Number of pens that Hazel had at first
= 5 u
= 5 x 9
= 45
Answer(s): 45