A fruit stall had 3 times as many starfruits as mangosteens. After 8 starfruits were added, the number of starfruits became 16 more than the number of mangosteens. How many mangosteens were there at the fruit stall at first?
| |
Starfruits |
Mangosteens |
| Before |
3 u |
1 u |
| Change |
+ 8 |
|
| After |
3 u + 8 |
1 u |
If another 8 mangosteens are added, the number of starfruits and mangosteens will be the same.
3 u + 8 = 1 u + 16
3 u - 1 u = 16 - 8
2 u = 8
1 u = 8 ÷ 2 = 4
Number of mangosteens at the fruit stall at first
= 1 u
= 4
Answer(s): 4
