Lynn had an equal number of kiwis and grapefruits at first. She sold one-third of the grapefruits and bought another 27 kiwis. In the end, she had thrice as many kiwis as grapefruits. Find the number of grapefruits she had at first.
| |
Kiwis |
Grapefruits |
| Before |
6 u - 27 |
3 u |
| Change |
+ 27 |
- 1 u |
| After |
6 u |
2 u |
The number of kiwis and grapefruits at first is the same.
6 u - 27 = 3 u
6 u - 3 u = 27
3 u = 27
1 u = 27 ÷ 3 = 9
Number of grapefruits that Lynn had at first
= 3 u
= 3 x 9
= 27
Answer(s): 27
