Julian and Zeph had the same number of pens. Julian gave away
34 of his pens while Zeph gave away
35 of his pens. Given that Julian gave away 12 pens more than Zeph, how many pens did Julian have at first?
| |
Julian's pens |
Zeph's pens |
| 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 Julian and Zeph each had at first is the same. Make the number of cards that Julian and Zeph each had at first the same. LCM of 4 and 5 is 20.
Number of pens that Julian gave away more than Zeph
= 15 u - 12 u
= 3 u
3 u = 12
1 u = 12 ÷ 3 = 4
Number of pens that Julian had at first
= 20 u
= 20 x 4
= 80
Answer(s): 80
