A fruit stall had 6 times as many lemons as grapefruits. After 4 grapefruits were added, the number of lemons became twice the number of the grapefruits. How many grapefruits were there at the fruit stall at first?
| |
Lemons |
Grapefruits |
| Before |
6x1 =
6 u |
1x1 =
1 u |
| Change |
|
+ 4 |
| After |
2x3 =
6 u |
1x3 =
3 u |
The number of lemons remains unchanged. Make the number of lemons the same. LCM of 2 and 6 is 6.
Number of grapefruits added
= 3 u - 1 u
= 2 u
2 u = 4
1 u = 4 ÷ 2 = 2
Number of grapefruits at the fruit stall at first
= 1 u
= 1 x 2
= 2
Answer(s): 2
