SOLUTION: Kylie is 12cm taller than Lee and KIm is 18 cm shorter than Lee.if the average of their heights is 22cm, how tall is kylie?

Question 1011511: Kylie is 12cm taller than Lee and KIm is 18 cm shorter than Lee.if the average of their heights is 22cm, how tall is kylie?
Answer by ikleyn(52884) (Show Source): You can put this solution on YOUR website!
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Kylie is 12cm taller than Lee and KIm is 18 cm shorter than Lee.if the average of their heights is 22cm, how tall is kylie?
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x = Kylie's height (in cm),
y = Lee' height, and
z = Kim's height.

x = y + 12,
z = y - 18,
 = 22.

Solve this system. First step is to substitute expressions for x and z into the third equation and then solve it for y.

Please do it yourself. It is easy.

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