Bryan and Archie had the same number of stamps. Bryan gave away
57 of his stamps while Archie gave away
35 of his stamps. Given that Bryan gave away 12 stamps more than Archie, how many stamps did Bryan have at first?
| |
Bryan's stamps |
Archie's stamps |
| Before |
7x5 =
35 u |
5x7 =
35 u |
| Change |
- 5x5 =
- 25 u |
- 3x7 =
- 21 u |
| After |
2x5 =
10 u |
2x7 =
14 u |
The number of cards that Bryan and Archie each had at first is the same. Make the number of cards that Bryan and Archie each had at first the same. LCM of 7 and 5 is 35.
Number of stamps that Bryan gave away more than Archie
= 25 u - 21 u
= 4 u
4 u = 12
1 u = 12 ÷ 4 = 3
Number of stamps that Bryan had at first
= 35 u
= 35 x 3
= 105
Answer(s): 105
