The price of pulses increased by $30 %$ . By how much percent should Surbhi reduce her consumption of pulses so that her expenditure on pulses does not increase?

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Solution

If the price of a commodity increases by R%,
then the reduction in consumption so as not to increase the expenditure is
$[R \div 100 + R \times 100]$
Here $R % = 30 %$
Hence % decrease in the consumption of pulses
$[30 \div 100 + 30 \times 100]$
$= [30 \div 130 \times 100]$
$= [0.23076 \times 100]$
$= 23.076$
the consumption will be decreased by $23.076$

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The price of pulses increased by 30%. By how much percent should Surbhi reduce her consumption of pulses so that her expenditure on pulses does not increase?

If the price of a commodity increases by R%, then the reduction in consumption so as not to increase the expenditure is[R÷100+R×100]Here R%=30%Hence % decrease in the consumption of pulses[30÷100+30×100]=[30÷130×100]=[0.23076×100]=23.076the consumption will be decreased by 23.076

The price of pulses increased by $30 %$ . By how much percent should Surbhi reduce her consumption of pulses so that her expenditure on pulses does not increase?