CTET 2 Math and Science Jan 2012 Paper

Question : 38 of 120

Marks: +1, -0

Two positive numbers x and y are inversely proportional. If x increases by 10%, then y decreases by

Solution:

x∝\;\;{1}/{y}

xy = constant
y decreased by

=(\;\;{10}/{100+10})×100\%=\;\;{100}/{11}\%

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