Question

The average of 30 results is 20 and average of other 20 results is 30.wwht will be average of all the results

Answer 1

Avg of 30

Total1/30=20
Total1=20*30=600

Avg of 20
Total2=30*20=600
Avg of all
Total1+total2/20+30
=1200/50
=24

Or AVG=(20*30)+(30*20)/20+30=24