There are 16 more teachers in School U than in School V. After 30% of the teachers left School U and 50% of teachers left School V, the number of teachers who remained in School U is seven times that of the number of teachers in School V. Find the number of teachers in School U at first.
|
U |
V |
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 U than in School V
= 10 u - 2 u
= 8 u
8 u = 16
1 u = 16 ÷ 8 = 2
Number of teachers in School U at first
= 10 u
= 10 x 2
= 20
Answer(s): 20