PSLEA store owner had an equal number of chikoos, mangoes and grapefruits at first. After 40 grapefruits, some chikoos and mangoes were sold, there were 138 fruits left. There were 4 times as many chikoos as mangoes left. The number of grapefruits left was 33 fewer than the number of chikoos left. How many mangoes were sold?
|
Chikoos |
Mangoes |
Grapefruits |
Total |
Before |
1 |
1 |
1 |
|
Change |
- ? |
- ? |
- 40 |
|
After |
4 u |
1 u |
4 u - 33 |
138 |
Total number of fruits in the end
= 4 u + 1 u + 4 u - 33
= 9 u - 33
9 u - 33 = 138
9 u = 138 + 33
9 u = 171
1 u = 171 ÷ 9 = 19
Number of grapefruits at first
= 4 u - 33 + 40
= 4 x 19 + 7
= 83
The number of grapefruits and mangoes at first is the same.
Number of mangoes sold
= 83 - 19
= 64
Answer(s): 64