A fruit seller had kiwis and mangosteens. The ratio of kiwis to mangosteens was 2 : 7. After
14 of the kiwis and 40 mangosteens were sold, there were 2 times as many kiwis as mangosteens left. How many kiwis and mangosteens were there at first?
| |
Kiwis |
Mangosteens |
Total |
| Before |
2 u |
7 u |
9 u |
| Change |
- 0.5 u |
- 40 |
|
| After |
1.5 u |
3 u |
|
Number of kiwis sold
=
14 x 2 u
= 0.5 u
Number of kiwis left
= 2 u - 0.5 u
= 1.5 u
Number of mangosteens left
= 2 x 1.5 u
= 3 u
Number of mangosteens sold
= 7 u - 3 u
= 4 u
4 u = 40
1 u = 40 ÷ 4 = 10
Number of kiwis and mangosteens at first
= 2 u + 7 u
= 9 u
= 9 x 10
= 90
Answer(s): 90
