Question

the arithmetic mean of 10 numbers is 20 and arithmetic mean of 30 number is 60 then find of arithmetic mean of combined data​

Answer 1

Answer:

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

AM = 50

Explanation:

hope it helps you mate and follow me and mark me as brainliest

Answer 2

Answer:I think the answer is 380

Explanation:STEP:1 it is in pic attached

STEP:2

LCM of 10 and 30 is 30 so

x/10*3/3 + y/30*1/1=3x/30 + y/30

Common denominator,so

3*200+1800/30=380