At the train transit terminal, 37.5% of the passengers were male and the rest were female. After 18 female passengers left 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 |
3x1 = 3 u |
5x1 = 5 u |
Change |
No change |
- 18 |
After |
1x3 = 3 u |
1x3 = 3 u |
37.5% =
3751000 =
3850% =
50100 =
12The number of male passengers at first and in the end remains unchanged. Make the number of male passengers the same. LCM of 3 and 1 is 3.
Number of female passengers who left the terminal
= 5 u - 3 u
= 2 u
2 u = 18
1 u = 18 ÷ 2 = 9
Number of female passengers at the terminal at first
= 5 u
= 5 x 9
= 45
Answer(s): 45