The ratio of Jamie's stickers to Jack's stickers at first was 2 : 5. After Jamie gave Jack 48 stickers, the ratio of Jamie's stickers to Jack's stickers is 1 : 4. What was the number of stickers they had altogether?
|
Jamie |
Jack |
Total |
Before |
2x5 = 10 u |
5x5 = 25 u
|
7x5 = 35 u |
Change |
- 48 |
+ 48 |
|
After |
1x7 = 7 u |
4x7 = 28 u |
5x7 = 35 u |
Number of stickers that Jamie gave Jack
= 10 u - 7 u
= 3 u
3 u = 48
1 u = 48 ÷ 3 = 16
Total number of stickers that they had
= 35 u
= 35 x 16
= 560
Answer(s): 560