The average weight of 5 members of a family is 67. Individual weight of four members are 65 kg, 71 kg, 63 kg and 72 kg. Find the weight of fifth member of the family.
A62 kg
B78 kg
C56 kg
D64 kg
Answer:
D. 64 kg
Read Explanation:
Let the weight of fifth member be x.
[65 + 71 + 63 + 72 + x]/5 = 67
⇒ 335 = 271 + x
⇒ x = 64