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