FestiveZigzag FestiveZigzag

06-01-2018
Mathematics

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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.

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milutinbabicp1zsaw milutinbabicp1zsaw

06-01-2018

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

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