SOLUTION: The value of mirror exceeding 10 ( meter square ) in area varies directly as the square of its area . Given that a 60 ( meter square ) costs $400 , find the price of a 45 (meter sq

Question 818286: The value of mirror exceeding 10 ( meter square ) in area varies directly as the square of its area . Given that a 60 ( meter square ) costs $400 , find the price of a 45 (meter square ) mirror. Answer 225.
Answer by TimothyLamb(4379) (Show Source): You can put this solution on YOUR website!
v = Ma^2
M = constant of proportionality for this type of mirror
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400 = M60^2
M = 400/60^2
M = 0.111111 $/sq.m
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v = M45^2
v = (0.111111 $/sq.m) * (2025 sq.m)
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v = $225
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