A fruit stall had 3 times as many lemons as kiwis. After 15 kiwis were sold, the number of lemons became 12 times the number of the remaining kiwis. How many kiwis were there at the fruit stall at first?
| |
Lemons |
Kiwis |
| Before |
3x4 =
12 u |
1x4 =
4 u |
| Change |
|
- 15 |
| After |
12 u |
1 u |
The number of lemons remains unchanged. Make the number of lemons 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
