PSLEA store owner had an equal number of kiwis, dragonfruits and starfruits at first. After 80 starfruits, some kiwis and dragonfruits were sold, there were 197 fruits left. There were 2 times as many kiwis as dragonfruits left. The number of starfruits left was 18 fewer than the number of kiwis left. How many dragonfruits were sold?
|
Kiwis |
Dragonfruits |
Starfruits |
Total |
Before |
1 |
1 |
1 |
|
Change |
- ? |
- ? |
- 80 |
|
After |
2 u |
1 u |
2 u - 18 |
197 |
Total number of fruits in the end
= 2 u + 1 u + 2 u - 18
= 5 u - 18
5 u - 18 = 197
5 u = 197 + 18
5 u = 215
1 u = 215 ÷ 5 = 43
Number of starfruits at first
= 2 u - 18 + 80
= 2 x 43 + 62
= 148
The number of starfruits and dragonfruits at first is the same.
Number of dragonfruits sold
= 148 - 43
= 105
Answer(s): 105