Esther had an equal number of mangoes and guavas at first. She sold half of the guavas and bought another 12 mangoes. In the end, she had four times as many mangoes as guavas. Find the number of guavas she had at first.
| |
Mangoes |
Guavas |
| Before |
4 u - 12 |
2 u |
| Change |
+ 12 |
- 1 u |
| After |
4 u |
1 u |
The number of mangoes and guavas at first is the same.
4 u - 12 = 2 u
4 u - 2 u = 12
2 u = 12
1 u = 12 ÷ 2 = 6
Number of guavas that Esther had at first
= 2 u
= 2 x 6
= 12
Answer(s): 12
