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