A store owner had the same number of kiwis, dragonfruits and chikoos at first. After 121 chikoos, some kiwis and dragonfruits were taken out, there were 171 fruits left. There were twice as many kiwis as dragonfruits left. The number of chikoos left was 19 less than the number of kiwis. How many dragonfruits were taken out?
| |
Kiwis |
Dragonfruits |
Chikoos |
Total |
| Before |
1 |
1 |
1 |
|
| Change |
- ? |
- ? |
- 121 |
|
| After |
2 u |
1 u |
2 u - 19 |
171 |
Total number of fruits in the end
= 2 u + 1 u + 2 u - 19
= 5 u - 19
5 u - 19 = 171
5 u = 171 + 19
5 u = 190
1 u = 190 ÷ 5 = 38
Number of chikoos at first
= 2 u - 19 + 121
= 2 x 38 - 19 + 121
= 76 - 19 + 121
= 178
The number of dragonfruits and chikoos at first was the same.
Number of dragonfruits taken out
= 178 - 1 u
= 178 - 38
= 140
Answer(s): 140
