At a fruit stall, there were
13 as many starfruits as mangosteens. After 15 mangosteens were sold, the number of starfruits became
23 as many as the mangosteens. How many fruits were at the fruit stall at first?
| |
Starfruits |
Mangosteens |
| Before |
1x2 =
2 u |
3x2 =
6 u |
| Change |
|
- 15 |
| After |
2x1 =
2 u |
3x1 =
3 u |
The number of starfruits at first and in the end remains unchanged. Make the number of starfruits the same. LCM of 1 and 2 is 2.
Number of mangosteens sold
= 6 u - 3 u
= 3 u
3 u = 15
1 u = 15 ÷ 3 = 5
Number of fruits at first
= 2 u + 6 u
= 8 u
= 8 x 5
= 40
Answer(s): 40
