Question

The average of 20 number is 15 and the average of first five is 12 the average of the rest is

Answer 1

16 is the average of rest 15 nos.

Answer 2

Step-by-step explanation:

let avg of remaining 15 no.s = x

sum of all no.s = 15x20= 300

sum of first 5 = 12 x 5=60

sum of next 15 no.s = 15x

300 = 60+15x

240=15x

x=240/15=16