Question

The average height of a family of five is 150 cm. If the heights of 4 family members is 153,150, 151 and 152, find the height of the fifth member.

Answer 1

first you take 5 then multiply by 150 where you will get 750

then you add the height of the four family members you have been given where you will get 606

then you take 750 which is the sum of the five family members then you subtract 606 which is the sum of the first four

;750− 606=144

                 =144