Question

the mean mass of five men is 76 kg. the mass of four of the men are 72 kg, 74 kg, 75 kg and 81 kg. what is the mass of the fifth man

Answer 1

Answer:

78 kg

I hope it help you in your studies

Answer 2

Answer:

74

72-76 + 74-76+75-76+81-76+X-76=0

so X=74

hope it's correct