At the ferry transit terminal, 12.5% of the passengers were female and the rest were male. After 30 male passengers left the terminal, the percentage of the number of male passengers became 80%. Find the number of male passengers at the terminal at first.
|
Female |
Male |
Before |
1x1 = 1 u |
7x1 = 7 u |
Change |
No change |
- 30 |
After |
1x1 = 1 u |
4x1 = 4 u |
12.5% =
1251000 =
1880% =
80100 =
45The number of female passengers at first and in the end remains unchanged. Make the number of female passengers the same. LCM of 1 and 1 is 1.
Number of male passengers who left the terminal
= 7 u - 4 u
= 3 u
3 u = 30
1 u = 30 ÷ 3 = 10
Number of male passengers at the terminal at first
= 7 u
= 7 x 10
= 70
Answer(s): 70