Question

Average of 36 results is 18. If 2 is subtracted from each result, then what will be the new average of the results?

Answer 1

mean of 36 no =18

total result =18*36=648

if 2 is subtracted from each no =648-36*2

                                                    =648-72

                                                    =576

new mean =576/36

                  =16 ----------------ans