The number of mangosteens at a stall was 90% more than the number of starfruits. After 10% of the starfruits were sold, there were 20 more mangosteens than starfruits. Find the total number of mangosteens and starfruits at the stall at first.
| |
Mangosteens |
Starfruits |
More |
Total |
| Before |
19 u |
10 u |
|
29 u |
| Change |
|
- 1 u |
|
|
| After |
19 u |
9 u |
10 u |
|
Number of starfruits at first in percent = 100%
Number of mangosteens at first in percent
= 100% + 90%
= 190%
MangosteensStarfruits =
190100 =
1910Number of starfruits sold
= 10% x 10 u
=
10100 x 10 u
= 1 u
Number of more mangosteens than starfruits in the end
= 19 u - 9 u
= 10 u
10 u = 20
1 u = 20 ÷ 10 = 2
Total number of starfruits and mangosteens at first
= 19 u + 10 u
= 29 u
= 29 x 2
= 58
Answer(s): 58
