Question:The price of sugar increases by `20%`. By what percent must a house wife reduce the consumption of sugar, so that the expenditure on sugar is the same as before ? 

A `16 2/3` 
B `20` 
C `80` 
D `83 1/3` 

+ Answer
A 

+ Explanation
Reduction in Consumption 

`= [r/(100 + r) xx 100]%`

`= ((20)/(120) xx 100)%`

`=16 2/3%`.

+ Report

Md. Habib Ullah

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