A fruit stall had 3 times as many dragonfruits as lemons. After 7 dragonfruits were added, the number of dragonfruits became 11 more than the number of lemons. How many lemons were there at the fruit stall at first?
| |
Dragonfruits |
Lemons |
| Before |
3 u |
1 u |
| Change |
+ 7 |
|
| After |
3 u + 7 |
1 u |
If another 7 lemons are added, the number of dragonfruits and lemons will be the same.
3 u + 7 = 1 u + 11
3 u - 1 u = 11 - 7
2 u = 4
1 u = 4 ÷ 2 = 2
Number of lemons at the fruit stall at first
= 1 u
= 2
Answer(s): 2
