Question

Group A has 10 numbers with an average of 11. Group b has 20 numbers with an average of 22. Group c has 30 numbers with an adverage wit 30. Grou D has 40 numbers with an adverage of 44. The four groups are put together. What is the adverage of conbined group??​

Answer 1

32.1 is your answer. please mark me as brainliest

Answer 2

11*10=110(A)

20*22=440(B)

30*30=900(C)

40*44=1760(D)

All= 3210/10=32.1

please mar me a brainliest