PSLEA grocer had an equal number of mangoes, starfruits and mangosteens at first. After 47 mangosteens, some mangoes and starfruits were sold, there were 154 fruits left. There were 3 times as many mangoes as starfruits left. The number of mangosteens left was 35 less than the number of mangoes left. How many starfruits were sold?
|
Mangoes |
Starfruits |
Mangosteens |
Total |
Before |
1 |
1 |
1 |
|
Change |
- ? |
- ? |
- 47 |
|
After |
3 u |
1 u |
3 u - 35 |
154 |
Total number of fruits in the end
= 3 u + 1 u + 3 u - 35
= 7 u - 35
7 u - 35 = 154
7 u = 154 + 35
7 u = 189
1 u = 189 ÷ 7 = 27
Number of mangosteens at first
= 3 u - 35 + 47
= 3 x 27 + 12
= 93
The number of mangosteens and starfruits at first is the same.
Number of starfruits sold
= 93 - 27
= 66
Answer(s): 66