Question

the A. M of 10 number is 20 and A. M of 30 number is 60. find A. M of the combined data​

Answer 1

Step-by-step explanation:

mean=sum/no. of terms

sum=mean × no. of terms

sum of AM1=10×20=200

sum of AM2=30×60=1800

total sum=2000

total no. of terms=40

AM(total)=2000/40=50

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