Shiyun had 16 more croissants than Opal at first. After Shiyun ate 4 croissants, she had five times as many croissants as Opal in the end. How many croissants did Opal have?
| |
Opal |
Shiyun |
| Before |
1 u |
1 u + 16 |
| Change |
|
- 4 |
| After |
1 u |
1 u + 12 |
Comparing Opal
and Shiyun in the end |
1 u |
5 u |
The number of croissants that Opal had remains unchanged.
Number of croissants that Shiyun had in the end
= 5 x 1 u
= 5 u
5 u = 1 u + 12
5 u - 1 u = 12
4 u = 12
1 u = 12 ÷ 4 = 3
Number of croissants that Opal had
= 1 u
= 3
Answer(s): 3
