There are 32 more teachers in School M than in School N. After 30% of the teachers left School M and 50% of teachers left School N, the number of teachers who remained in School M is seven times that of the number of teachers in School N. Find the number of teachers in School M at first.
|
M |
N |
Before |
10 u |
2 u |
Change |
- 3 u |
- 1 u |
After |
7 u |
1 u |
30% =
30100 =
310 50% =
50100 =
32Number of more teachers in School M than in School N
= 10 u - 2 u
= 8 u
8 u = 32
1 u = 32 ÷ 8 = 4
Number of teachers in School M at first
= 10 u
= 10 x 4
= 40
Answer(s): 40