Zoe had 11 more chocolate bars than Ryan at first. After Ryan had eaten 16 of his chocolate bars, Zoe had 4 times as many chocolate bars as Ryan. How many chocolate bars did Zoe and Ryan have in total at first?
| |
Zoe |
Ryan |
Total |
| Before |
1 u + 16 + 11 |
1 u + 16 |
5 u + 16 |
| Change |
|
- 16 |
|
| After |
4 u |
1 u |
|
The number of chocolate bars that Zoe had at first remains unchanged.
4 u = 1 u + 16 + 11
4 u - 1 u = 27
3 u = 27
1 u = 27 ÷ 3 = 9
Number of chocolate bars that they had at first
= 5 u + 16
= 5 x 9 + 16
= 45 + 16
= 61
Answer(s): 61
