At the airport transit terminal, 12.5% of the passengers were male and the rest were female. After 12 female passengers left the terminal, the percentage of the number of female passengers became 75%. Find the number of female passengers at the terminal at first.
| |
Male |
Female |
| Before |
1x1 =
1 u |
7x1 =
7 u |
| Change |
No change |
- 12 |
| After |
1x1 =
1 u |
3x1 =
3 u |
12.5% =
1251000 =
1875% =
75100 =
34The number of male passengers at first and in the end remains unchanged. Make the number of male passengers the same. LCM of 1 and 1 is 1.
Number of female passengers who left the terminal
= 7 u - 3 u
= 4 u
4 u = 12
1 u = 12 ÷ 4 = 3
Number of female passengers at the terminal at first
= 7 u
= 7 x 3
= 21
Answer(s): 21
