Sarah had 15 more caramel apples than Asher at first. After Asher had eaten 21 of his caramel apples, Sarah had 4 times as many caramel apples as Asher. How many caramel apples did Sarah and Asher have in total at first?
| |
Sarah |
Asher |
Total |
| Before |
1 u + 21 + 15 |
1 u + 21 |
5 u + 21 |
| Change |
|
- 21 |
|
| After |
4 u |
1 u |
|
The number of caramel apples that Sarah had at first remains unchanged.
4 u = 1 u + 21 + 15
4 u - 1 u = 36
3 u = 36
1 u = 36 ÷ 3 = 12
Number of caramel apples that they had at first
= 5 u + 21
= 5 x 12 + 21
= 60 + 21
= 81
Answer(s): 81
