Eva had 14 more cupcakes than Joelle at first. After Eva ate 5 cupcakes, she had four times as many cupcakes as Joelle in the end. How many cupcakes did Joelle have?
| |
Joelle |
Eva |
| Before |
1 u |
1 u + 14 |
| Change |
|
- 5 |
| After |
1 u |
1 u + 9 |
Comparing Joelle
and Eva in the end |
1 u |
4 u |
The number of cupcakes that Joelle had remains unchanged.
Number of cupcakes that Eva had in the end
= 4 x 1 u
= 4 u
4 u = 1 u + 9
4 u - 1 u = 9
3 u = 9
1 u = 9 ÷ 3 = 3
Number of cupcakes that Joelle had
= 1 u
= 3
Answer(s): 3
