Valen and Warren had the same number of erasers. Valen gave away
34 of his erasers while Warren gave away
35 of his erasers. Given that Valen gave away 12 erasers more than Warren, how many erasers did Valen have at first?
| |
Valen's erasers |
Warren's erasers |
| Before |
4x5 =
20 u |
5x4 =
20 u |
| Change |
- 3x5 =
- 15 u |
- 3x4 =
- 12 u |
| After |
1x5 =
5 u |
2x4 =
8 u |
The number of cards that Valen and Warren each had at first is the same. Make the number of cards that Valen and Warren each had at first the same. LCM of 4 and 5 is 20.
Number of erasers that Valen gave away more than Warren
= 15 u - 12 u
= 3 u
3 u = 12
1 u = 12 ÷ 3 = 4
Number of erasers that Valen had at first
= 20 u
= 20 x 4
= 80
Answer(s): 80
