The bar graph given below shows the number of male teacher and female teachers in 5 schools.

K1 = The total number of male teachers in all the 5 schools.

K2 = The total number of female teachers in all the 5 schools.

What is the value of (K1 - K2) ?

160

K1 = The total number of male teachers in all the 5 schools

= 120 + 160 + 140 + 100 + 60

= 580

& K2 = The total number of female teachers in all the 5 schools

= 160 + 140 + 40 + 20 + 60

= 420

Now , ( K1 - K2 ) = 580 - 420  = 160