George had
25 the number of stamps that Sam had at first. After Sam gave George 30 of his stamps, George had
35 the number of stamps that Sam had. How many stamps did George have at first?
| |
George |
Sam |
Total |
| Before |
2x8 =
16 u |
5x8 =
40 u |
7x8 =
56 u |
| Change |
+ 5 u |
- 5 u |
|
| After |
3x7 =
21 u |
5x7 =
35 u |
8x7 =
56 u |
The total number of stamps that George and Sam had at first and in the end remains unchanged. Make the total number of stamps the same. LCM of 7 and 8 is 56.
Number of stamps that Sam gave George
= 21 u - 16 u
= 5 u
5 u = 30
1 u = 30 ÷ 5 = 6
Number of stamps that George had at first
= 16 u
= 16 x 6
= 96
Answer(s): 96
