A store owner had the same number of passion fruits, kiwis and starfruits at first. After 57 starfruits, some passion fruits and kiwis were sold, there were 137 fruits left. There were twice as many passion fruits as kiwis left. The number of starfruits left was 18 less than the number of passion fruits. How many kiwis were sold?
| |
Passion Fruits |
Kiwis |
Starfruits |
Total |
| Before |
1 |
1 |
1 |
|
| Change |
- ? |
- ? |
- 57 |
|
| After |
2 u |
1 u |
2 u - 18 |
137 |
Total number of fruits in the end
= 2 u + 1 u + 2 u - 18
= 5 u - 18
5 u - 18 = 137
5 u = 137 + 18
5 u = 155
1 u = 155 ÷ 5 = 31
Number of starfruits at first
= 2 u - 18 + 57
= 2 x 31 - 18 + 57
= 62 - 18 + 57
= 101
The number of kiwis and starfruits at first was the same.
Number of kiwis sold
= 101 - 1 u
= 101 - 31
= 70
Answer(s): 70
