The price of cooking oil has increased by $25 %$ . The percentage of reduction that a family should effect in the use of cooking oil so as not to increase the expenditure on this account is:

15%

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20%

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25%

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30%

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Solution

The correct option is B
20%

The percentage of reduction is calculated with the new price of the oil.
Let the price of cooking oil = Rs. 100

Increase in price $= 25 %$ of 100 = 25
$∴$ Increased price = 100 +25=125
Required percentage of Reduction
$\frac{C h a n g e i n p r i c e}{I n c r e a s e d p r i c e} \times 100$
$= \frac{25}{125} \times 100 = 20 %$

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The price of cooking oil has increased by 25%. The percentage of reduction that a family should effect in the use of cooking oil so as not to increase the expenditure on this account is:

The correct option is B 20% The percentage of reduction is calculated with the new price of the oil. Let the price of cooking oil = Rs. 100 Increase in price =25% of 100 = 25 ∴ Increased price = 100 +25=125 Required percentage of Reduction Change in priceIncreased price×100 =25125×100=20%

The price of cooking oil has increased by $25 %$ . The percentage of reduction that a family should effect in the use of cooking oil so as not to increase the expenditure on this account is: