Egypt and Turkey took part in Youth Games. From Egypt, the ratio of the number of male supporters to the number of female supporters was 1 : 10. From Turkey, the ratio of the number of male supporters to the number of female supporters was 1 : 3. The total number of supporters from Egypt was
1124 the total number of supporters from Turkey.
- What was the ratio of the number of male supporters from Egypt to the total number of male supporters from both countries? Express the answer in the simplest form.
- After 25 male supporters from both countries left the games, the percentage of all the female supporters became 84%. How many more female supporters from Turkey than Egypt were there at first?
Egypt |
Turkey |
11 u |
24 u |
Male supporters |
Female supporters |
Male supporters |
Female supporters |
1 |
10 |
1x2 |
3x2 |
1 u |
10 u |
6 u |
18 u |
(a)
Number of male supporters from Turkey
=
14 x 24 u
= 6 u
Number of female supporters from Egypt
=
34 x 24 u
= 18 u
Total number of male supporters
= 1 u + 6 u
= 7 u
Male supporters from Egypt : Total male supporters
1 : 7
(b)
|
Male supporters |
Female supporters |
Before |
7x3 = 21% |
28x3 = 84% |
Change |
- 25 |
|
After |
16% |
84% |
Number of male supporters in the end in percent
= 100% - 84%
= 16%
Total number of female supporters at first
= 10 u + 18 u
= 28 u
After 25 male supporters from both countries left the games, the percentage of all the female supporters became 84%.
Since only male supporters left the games, the number of female supporters remains unchanged. Make the number of female supporters the same.
28 u = 84%
1 u = 84% ÷ 28 =
3%Number of male supporters at first in percent
= 7 x 3%
= 21%
Number of male supporters from both countries who left
= 21% - 16%
= 5%
5% = 25
1% = 25 ÷ 5 =
5Number of more female supporters from Turkey than Egypt at first
= 18 u - 10 u
= 8 u
= 8 x 3%
= 24%
= 24 x 5
= 120
Answer(s): (a) 1 : 7; (b) 120