if the price of a television set is increased by 25..., Latest Questions, General Mathematics

Question:If the price of a television set is increased by 25%, then by what percentage should the new price be reduced to bring the price back to the original level ?

A 15% 
B 20% 
C 25% 
D 30%

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+ AnswerB

+ ExplanationLet original price be Rs. x.

New price` = (125)/(100) xx x`

                 `= (5x)/4`

Reduction on` = ((5x)/4 - x)`

                     `= x/4`

Reduction on` 100 = (x/4 xx 4/(5x) xx 100)`

                     `= 20%`

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