A fruit seller had starfruits and lemons. The ratio of starfruits to lemons was 2 : 7. After
34 of the starfruits and 22 lemons were sold, there were 3 times as many starfruits as lemons left. How many starfruits and lemons were there at first?
| |
Starfruits |
Lemons |
Total |
| Before |
2 u |
7 u |
9 u |
| Change |
- 1.5 u |
- 22 |
|
| After |
0.5 u |
1.5 u |
|
Number of starfruits sold
=
34 x 2 u
= 1.5 u
Number of starfruits left
= 2 u - 1.5 u
= 0.5 u
Number of lemons left
= 3 x 0.5 u
= 1.5 u
Number of lemons sold
= 7 u - 1.5 u
= 5.5 u
5.5 u = 22
1 u = 22 ÷ 5.5 = 4
Number of starfruits and lemons at first
= 2 u + 7 u
= 9 u
= 9 x 4
= 36
Answer(s): 36
