Jaslyn and Dana had an equal number of stamps at first. Jaslyn used
12 of her stamps and Dana used
16 of her stamps. They used 28 stamps altogether. How many stamps did Dana have in the end?
| |
Jaslyn |
Dana |
| Before |
2x3 =
6 u |
6x1 =
6 u |
| Change |
- 1x3 =
- 3 u |
- 1x1 =
- 1 u |
| After |
1x3 =
3 u |
5x1 =
5 u |
The number of stamps that Jaslyn and Dana each had at first is the same. Make the number of stamps that Jaslyn and Dana each had at first the same. LCM of 2 and 6 is 6.
Number of stamps that Jaslyn and Dana used
= 3 u + 1 u
= 4 u
4 u = 28
1 u = 28 ÷ 4 = 7
Number of stamps that Dana had in the end
= 5 u
= 5 x 7
= 35
Answer(s): 35
