Wendy had 12 more erasers than Jen. After Jen gave away
58 of her erasers, Wendy had four times as many erasers as Jen. How many erasers did Jen have at first?
| |
Wendy |
Jen |
Comparing Wendy and
Jen at first |
12 more |
|
| Before |
12 u |
8 u |
| Change |
|
- 5 u |
| After |
12 u |
3 u |
Comparing Wendy and
Jen in the end |
4x3 =
12 u |
1x3 =
3 u |
Number of erasers that Jen had in the end is repeated. Make the number of erasers that Jen had in the end the same. LCM of 1 and 3 is 3.
Number of erasers that Wendy had at first = 12 u
Number of erasers that Wendy had more than Jen at first
= 12 u - 8 u
= 4 u
4 u = 12
1 u = 12 ÷ 4 = 3
Number of erasers that Jen had at first
= 8 u
= 8 x 3
= 24
Answer(s): 24
