Question

The A.M of 10 numbers is 20 and A.M of 30 numbers is 60,then find A.M of the Combined data.

Answer 1

Answer:

Let the sum of numbers of first data be 'x' and second data be 'y', then

x/10 = 20

=> x = 200

And,

y/30 = 60

=> y = 1800

∴ A.M. of combined data = x+y

10+30

= 1800+200

40

=50