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