The ratio of Jonathan's stickers to Julian's stickers at first was 3 : 5. After Jonathan gave Julian 84 stickers, the ratio of Jonathan's stickers to Julian's stickers is 1 : 3. What was the number of stickers they had in total?
|
Jonathan |
Julian |
Total |
Before |
3x4 = 12 u |
5x4 = 20 u
|
8x4 = 32 u |
Change |
- 84 |
+ 84 |
|
After |
1x8 = 8 u |
3x8 = 24 u |
4x8 = 32 u |
Number of stickers that Jonathan gave Julian
= 12 u - 8 u
= 4 u
4 u = 84
1 u = 84 ÷ 4 = 21
Total number of stickers that they had
= 32 u
= 32 x 21
= 672
Answer(s): 672