The ratio of Avery's stickers to Robert's stickers at first was 3 : 5. After Avery gave Robert 35 stickers, the ratio of Avery's stickers to Robert's stickers is 1 : 4. What was the number of stickers they had in total?
|
Avery |
Robert |
Total |
Before |
3x5 = 15 u |
5x5 = 25 u
|
8x5 = 40 u |
Change |
- 35 |
+ 35 |
|
After |
1x8 = 8 u |
4x8 = 32 u |
5x8 = 40 u |
Number of stickers that Avery gave Robert
= 15 u - 8 u
= 7 u
7 u = 35
1 u = 35 ÷ 7 = 5
Total number of stickers that they had
= 40 u
= 40 x 5
= 200
Answer(s): 200