A fruit stall had 3 times as many starfruits as kiwis. After 15 kiwis were sold, the number of starfruits became 12 times the number of the remaining kiwis. How many kiwis were there at the fruit stall at first?
| |
Starfruits |
Kiwis |
| Before |
3x4 =
12 u |
1x4 =
4 u |
| Change |
|
- 15 |
| After |
12 u |
1 u |
The number of starfruits remains unchanged. Make the number of starfruits the same. LCM of 3 and 12 is 12.
Number of kiwis in the end = 4 u - 15
4 u - 15 = 1 u
4 u - 1 u = 15
3 u = 15
1 u = 15 ÷ 3 = 5
Number of kiwis at the fruit stall at first
= 4 u
= 4 x 5
= 20
Answer(s): 20
