Jen had 9 more croissants than Kylie at first. After Jen ate 5 croissants, she had thrice as many croissants as Kylie in the end. How many croissants did Kylie have?
| |
Kylie |
Jen |
| Before |
1 u |
1 u + 9 |
| Change |
|
- 5 |
| After |
1 u |
1 u + 4 |
Comparing Kylie
and Jen in the end |
1 u |
3 u |
The number of croissants that Kylie had remains unchanged.
Number of croissants that Jen had in the end
= 3 x 1 u
= 3 u
3 u = 1 u + 4
3 u - 1 u = 4
2 u = 4
1 u = 4 ÷ 2 = 2
Number of croissants that Kylie had
= 1 u
= 2
Answer(s): 2
