SOLUTION: Sophie weighs 2 kilo more than her friend Emily, who in turn weighs 3 kilos more than Phoebe. Altogether, their combined weights are 131 kilos. How many kilos does Emily weighs?

Algebra ->  Customizable Word Problem Solvers  -> Numbers -> SOLUTION: Sophie weighs 2 kilo more than her friend Emily, who in turn weighs 3 kilos more than Phoebe. Altogether, their combined weights are 131 kilos. How many kilos does Emily weighs?      Log On

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Question 1120663: Sophie weighs 2 kilo more than her friend Emily, who in turn weighs 3 kilos more than Phoebe. Altogether, their combined weights are 131 kilos. How many kilos does Emily weighs?
Answer by greenestamps(13200) About Me  (Show Source):
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Since the problem asks for Emily's weight, it's probably easiest to let her age be our variable. So

let x = Emily's age
then x+2 = Sophie's weight
and x-3 = Phoebe's weight

Then, since their combined weight is 131kg,

x%2B%28x%2B2%29%2B%28x-3%29+=+131
3x-1+=+131
3x+=+132
x+=+34

Answer: Emily weighs 34kg