SOLUTION: In a group of six people,two have a mass of 60 kg while three have a mass one and a half times that. what is the mass of the sixth person if the average group mass is 70 kg ?
a
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Question 295183: In a group of six people,two have a mass of 60 kg while three have a mass one and a half times that. what is the mass of the sixth person if the average group mass is 70 kg ?
a 30 b 65 c 70 d 80 e none of these
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
2*60+3*(1.5*60)+x=6*70
a)30
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