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

J can find the height of the fifth member on this way

S=150

S1=153

S2=150

S3=151

S4=152

S5=?

S = (s1+s2+s3+s4+s5) / 5:

5*150 = 153+150+151+152+S5

S5=5*150-606=750-606=144

Answer is 144 cm