SOLUTION: y varies inversely with x. If x decreases by 20%, find the percentage change in y.

Question 934686: y varies inversely with x. If x decreases by 20%, find the percentage change in y.

Answer by TimothyLamb(4379) (Show Source): You can put this solution on YOUR website!
original relation:
y = 1/x
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new relation (x decreases by 20%):
y/0.80 = 1/0.80x
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percentage change in y:
( y/0.80) / y * 100
( 1/0.80) * 100
125%
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answer:
y increases by 25%
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