Kylie had an equal number of mangoes and lemons at first. She sold one-third of the lemons and bought another 30 mangoes. In the end, she had thrice as many mangoes as lemons. Find the number of lemons she had at first.
| |
Mangoes |
Lemons |
| Before |
6 u - 30 |
3 u |
| Change |
+ 30 |
- 1 u |
| After |
6 u |
2 u |
The number of mangoes and lemons at first is the same.
6 u - 30 = 3 u
6 u - 3 u = 30
3 u = 30
1 u = 30 ÷ 3 = 10
Number of lemons that Kylie had at first
= 3 u
= 3 x 10
= 30
Answer(s): 30
