Answer:
He gave 20
Step-by-step explanation:
30 minus 10 equals 20 and if John gave times that he would have 20 (40-20) which will give him the same answer.
35 ia the answer sorry if im wrong
Answer: 2.8
The mean of the data set it 10. Then find the difference between the mean and each data value. |10-5|=5 do this for all of them. You get 5,1,1,1,6. Now find the mean of the these new data value. 5+1+1+1+6=14 14/5=2.8
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