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