Average of 8 values is 36. If 4 is subtracted from each of the first three values and 5 is added in the each of the next five values, then what will be the new average ?
Answer & explanation
Correct answer: option 4
Sum of 8 values = 8 x 36 = 288
New sum when 4 is subtracted from 1st 3 values and 5 is added to next five values = 288 - 4 x 3 + 5 x 5 = 301
New average = \(\frac{301}{8}\) = 37.625