Yesterday, Andy had 20 more stamps than Dylan. Today, Andy gave Dylan
37 of his stamps. As a result, he has half as many stamps as Dylan now. How many stamps did Andy have yesterday?
|
Andy |
Dylan |
More |
Before |
7 u |
5 u |
2 u |
Change |
- 3 u |
+ 3 u |
|
After |
4 u |
8 u |
|
Comparing Andy and Dylan in the end |
1
|
2
|
|
Number of stamps that Dylan has now
= 2 x 4 u
= 8 u
Number of stamps that Andy had more than Dylan yesterday
= 7 u - 5 u
= 2 u
2 u = 20
1 u = 20 ÷ 2 = 10
Number of stamps that Andy had yesterday
= 7 u
= 7 x 10
= 70
Answer(s): 70