A fruit seller had mangoes and starfruits. The ratio of mangoes to starfruits was 2 : 9. After
34 of the mangoes and 84 starfruits were sold, there were 4 times as many mangoes as starfruits left. How many mangoes and starfruits were there at first?
| |
Mangoes |
Starfruits |
Total |
| Before |
2 u |
9 u |
11 u |
| Change |
- 1.5 u |
- 84 |
|
| After |
0.5 u |
2 u |
|
Number of mangoes sold
=
34 x 2 u
= 1.5 u
Number of mangoes left
= 2 u - 1.5 u
= 0.5 u
Number of starfruits left
= 4 x 0.5 u
= 2 u
Number of starfruits sold
= 9 u - 2 u
= 7 u
7 u = 84
1 u = 84 ÷ 7 = 12
Number of mangoes and starfruits at first
= 2 u + 9 u
= 11 u
= 11 x 12
= 132
Answer(s): 132
