There are 48 more teachers in School P than in School Q. After 20% of the teachers left School P and 50% of teachers left School Q, the number of teachers who remained in School P is four times that of the number of teachers in School Q. Find the number of teachers in School P at first.
|
P |
Q |
Before |
5 u |
2 u |
Change |
- 1 u |
- 1 u |
After |
4 u |
1 u |
20% =
20100 =
15 50% =
50100 =
12Number of more teachers in School P than in School Q
= 5 u - 2 u
= 3 u
3 u = 48
1 u = 48 ÷ 3 = 16
Number of teachers in School P at first
= 5 u
= 5 x 16
= 80
Answer(s): 80