The numerator of a fraction decreased by 20% and the denominator is increased by 20% the resultant fraction represents what percent decrease over the orginal fraction
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let fraction is x/y
numerator decreased = 80x / 100
denominator increased = 120y / 100
fraction will be (80x / 100) / (120y / 100)
= 2x / 3y
% decrease = { (2x / 3y) - (x/y) } ÷ (x/y)
-100/3 = -33.33%
minus value denotes decreased value.
numerator decreased = 80x / 100
denominator increased = 120y / 100
fraction will be (80x / 100) / (120y / 100)
= 2x / 3y
% decrease = { (2x / 3y) - (x/y) } ÷ (x/y)
-100/3 = -33.33%
minus value denotes decreased value.
Answered by
1
The numerator of a fraction decreased by 20% and the denominator is increased by 20% the resultant fraction represents percent decrease over the orginal fraction.... !!
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