Malaysia and Pakistan took part in Youth Games. From Malaysia, the ratio of the number of male supporters to the number of female supporters was 2 : 11. From Pakistan, the ratio of the number of male supporters to the number of female supporters was 1 : 8. The total number of supporters from Malaysia was
1327 the total number of supporters from Pakistan.
- What was the ratio of the number of male supporters from Malaysia to the total number of male supporters from both countries? Express the answer in the simplest form.
- After another 180 male supporters from both countries joined the games, the percentage of all the female supporters became 70%. How many less female supporters from Malaysia than Pakistan were there at first?
Malaysia |
Pakistan |
13 u |
27 u |
Male supporters |
Female supporters |
Male supporters |
Female supporters |
2 |
11 |
1x3 |
8x3 |
2 u |
11 u |
3 u |
24 u |
(a)
Number of male supporters from Pakistan
=
19 x 27 u
= 3 u
Number of female supporters from Malaysia
=
89 x 27 u
= 24 u
Total number of male supporters
= 2 u + 3 u
= 5 u
Male supporters from Malaysia : Total male supporters
2 : 5
(b)
|
Male supporters |
Female supporters |
Before |
5x2 = 10% |
35x2 = 70% |
Change |
+ 180 |
|
After |
30% |
70% |
Number of male supporters in the end in percent
= 100% - 70%
= 30%
Total number of female supporters at first
= 11 u + 24 u
= 35 u
After another 180 male supporters from both countries joined the games, the percentage of all the female supporters became 70%.
Since only more male supporters joined the games, the number of female supporters remains unchanged. Make the number of female supporters the same.
35 u = 70%
1 u = 70% ÷ 35 =
2%Number of male supporters at first in percent
= 5 x 2%
= 10%
Number of male supporters from both countries who joined the games
= 30% - 10%
= 20%
20% = 180
1% = 180 ÷ 20 =
9Number of less female supporters from Malaysia than Pakistan at first
= 24 u - 11 u
= 13 u
= 13 x 2%
= 26%
= 26 x 9
= 234
Answer(s): (a) 2 : 5; (b) 234