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Chapter:

Percentage

The actual area of a rectangle is 60 Cm2, but while measuring its length a student decreases it by 20% and breadth increases by 25%. The percentage error in area, calculated by student is :


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This Chapter Percentage consists of the following topics

The price of a car depreciates in the first year by 25% in the second year by 20% in third year by 15% and so on. The final price of the car after 3 years, if the present cost of the car is Rs. 10,00,000 :

The actual area of a rectangle is 60 Cm2, but while measuring its length a student decreases it by 20% and breadth increases by 25%. The percentage error in area, calculated by student is :

The cost of packaging of the mangoes is 40% the cost of fresh mangoes themselves. The cost of mangoes increased by 30% but the cost of packaging decreased by 50%, then the percentage change of the cost of packed mangoes, if the cost of packed mangoes is equal to the sum of the cost of fresh mangoes and cost of packaging :

The actual area of a rectangle is 60 Cm<sup>2</sup>

but while measuring its length a student decreases it by 20% and the breadth increases by 25%. The percentage error in area

calculated by the student is :

Percentage

Arithmetic-Aptitude