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UPSC Prelims

Mathematics

Theme:

Profit, Loss and Discount / लाभ, हानि और छूट

Q20 2022, Profit, Loss and Discount

The increase in the price of a certain item was 25%. Then the price was decreased by 20% and then again increased by 10%. What is the resultant increase in the price?

एक वस्तु की कीमत में 25% वृद्धि की गई। तत्पश्चात् कीमत को 20% घटा दिया गया और फिर 10% बढ़ा दिया गया। कीमत में परिणामी वृद्धि क्या है?

Explanation Please wait..

Let initial price = 100.

Then is an increase in the price of 25%. So, Price after 25% increase = 125.[100+25/100]

Then Price after 20% decrease will be 125 - (125 × 0.20) = 100.

Again there’s a price increase. So, price after 10% increase 110.

Thus, final value is increased by 10% with respect to the initial value (100).

व्याख्या Please wait..

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