At the ferry transit terminal, 12.5% of the passengers were female and the rest were male. After 28 male passengers left the terminal, the percentage of the number of male passengers became 70%. Find the number of male passengers at the terminal at first.
|
Female |
Male |
Before |
1x3 = 3 u |
7x3 = 21 u |
Change |
No change |
- 28 |
After |
3x1 = 3 u |
7x1 = 7 u |
12.5% =
1251000 =
1870% =
70100 =
710The number of female passengers at first and in the end remains unchanged. Make the number of female passengers the same. LCM of 1 and 3 is 3.
Number of male passengers who left the terminal
= 21 u - 7 u
= 14 u
14 u = 28
1 u = 28 ÷ 14 = 2
Number of male passengers at the terminal at first
= 21 u
= 21 x 2
= 42
Answer(s): 42