List of top Quantitative Aptitude Questions on Percentage asked in MAH MBA CET

On selling a pen at 5% loss and a book at 15% gain Karim gains Rs.\ 7. If he sells the pen at 5% gain and the book at 10% gain then he gains Rs.\ 13. The actual price of the book (in Rs.) is:

An uneducated retailer marks all his goods at 50% above the cost price and thinking that he will still make 25% profit, offers a discount of 25% on the marked price. What is his actual profit on the sales?

A shopkeeper bought 150 calculators at the rate of Rs. 250 per calculator. He spent Rs. 2500 on transportation and packing. If the marked price of a calculator is Rs. 320 per calculator and the shopkeeper gives a discount of 5% on the marked price, then what will be the percentage profit gained by the shopkeeper?

In a factory producing parts of an automobile, the parts manufactured on the shop floor are required to go through three quality checks, each conducted after a specific part of the processing on the raw material is completed. Only parts that are not rejected at one stage are put through the subsequent stages of production and testing. If average rejection rates at these three testing machines during a month are 10%, 5% and 2% respectively, then what is the effective rejection rate for the whole plant?

In measuring the side of a square, an error of 5% in excess is made. The error % in the calculated area is,