The table given below shows the number of male teacher and female teachers in 5 schools.
| Schools | Male teachers | Female teachers |
| J | 180 | 240 |
| K | 240 | 210 |
| L | 210 | 60 |
| M | 150 | 30 |
| N | 90 | 90 |
A1 = The average number of female teachers in all the 5 schools.
A2 = The average number of male teachers in all the 5 schools.
What is the value of (A1 + A2) ?
Answer & explanation
Correct answer: option 1
A1 = The average number of female teachers in all the 5 schools.
= \(\frac{240 + 210 + 60 + 30 + 90 }{5}\)
= \(\frac{ 630}{5}\)
= 126
A2 = The average number of male teachers in all the 5 schools.
= \(\frac{180 + 240 + 210 + 150 + 90 }{5}\)
= \(\frac{ 870}{5}\)
= 174
Now , ( A1 + A2 ) = 126 + 174 = 300