A fruit stall had 4 times as many pears as starfruits. After 10 starfruits were sold, the number of pears became 12 times the number of the remaining starfruits. How many starfruits were there at the fruit stall at first?
| |
Pears |
Starfruits |
| Before |
4x3 =
12 u |
1x3 =
3 u |
| Change |
|
- 10 |
| After |
12 u |
1 u |
The number of pears remains unchanged. Make the number of pears the same. LCM of 4 and 12 is 12.
Number of starfruits in the end = 3 u - 10
3 u - 10 = 1 u
3 u - 1 u = 10
2 u = 10
1 u = 10 ÷ 2 = 5
Number of starfruits at the fruit stall at first
= 3 u
= 3 x 5
= 15
Answer(s): 15
