PSLEA fruit seller had an equal number of peaches, starfruits and mangoes at first. After 61 mangoes, some peaches and starfruits were sold, there were 70 fruits left. There were 2 times as many peaches as starfruits left. The number of mangoes left was 15 fewer than the number of peaches left. How many starfruits were sold?
|
Peaches |
Starfruits |
Mangoes |
Total |
Before |
1 |
1 |
1 |
|
Change |
- ? |
- ? |
- 61 |
|
After |
2 u |
1 u |
2 u - 15 |
70 |
Total number of fruits in the end
= 2 u + 1 u + 2 u - 15
= 5 u - 15
5 u - 15 = 70
5 u = 70 + 15
5 u = 85
1 u = 85 ÷ 5 = 17
Number of mangoes at first
= 2 u - 15 + 61
= 2 x 17 + 46
= 80
The number of mangoes and starfruits at first is the same.
Number of starfruits sold
= 80 - 17
= 63
Answer(s): 63