At the airport transit terminal, 62.5% of the passengers were male and the rest were female. After 12 female passengers entered the terminal, the percentage of the number of female passengers became 50%. Find the number of female passengers at the terminal at first.
| |
Male |
Female |
| Before |
5x1 =
5 u |
3x1 =
3 u |
| Change |
No change |
+ 12 |
| After |
1x5 =
5 u |
1x5 =
5 u |
62.5% =
6251000 =
5850% =
50100 =
12The number of male passengers at first and in the end remains unchanged. Make the number of male passengers the same. LCM of 5 and 1 is 5.
Number of female passengers who entered the terminal
= 5 u - 3 u
= 2 u
2 u = 12
1 u = 12 ÷ 2 = 6
Number of female passengers at the terminal at first
= 3 u
= 3 x 6
= 18
Answer(s): 18
