A fruit seller had lemons and starfruits. The ratio of lemons to starfruits was 3 : 7. After
25 of the lemons and 34 starfruits were sold, there were 2 times as many lemons as starfruits left. How many lemons and starfruits were there at first?
| |
Lemons |
Starfruits |
Total |
| Before |
3 u |
7 u |
10 u |
| Change |
- 1.2 u |
- 34 |
|
| After |
1.8 u |
3.6 u |
|
Number of lemons sold
=
25 x 3 u
= 1.2 u
Number of lemons left
= 3 u - 1.2 u
= 1.8 u
Number of starfruits left
= 2 x 1.8 u
= 3.6 u
Number of starfruits sold
= 7 u - 3.6 u
= 3.4 u
3.4 u = 34
1 u = 34 ÷ 3.4 = 10
Number of lemons and starfruits at first
= 3 u + 7 u
= 10 u
= 10 x 10
= 100
Answer(s): 100
