There are 36 more teachers in School B than in School C. After 20% of the teachers left School B and 50% of teachers left School C, the number of teachers who remained in School B is four times that of the number of teachers in School C. Find the number of teachers in School B at first.
|
B |
C |
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 B than in School C
= 5 u - 2 u
= 3 u
3 u = 36
1 u = 36 ÷ 3 = 12
Number of teachers in School B at first
= 5 u
= 5 x 12
= 60
Answer(s): 60