91Ó°ÊÓ

The price of a car depreciates in the first year by \(25 \%\) in the second year by \(20 \%\) in the third year by \(15 \%\) and so on. The final price of the car after 3 years, if the present cost of the car 9 is Rs. \(10,00,000\) : (a) \(7,80,000\) (b) \(5,10,000\) (c) \(6,90,000\) (d) \(1,70,000\)

\(40 \%\) of a number when added to the square of the same number, then it is increased to \(4040 \%\) of itself the actual number is : 1 (a) 175 (b) 400 (c) 40 (d) 120

4 In an examination \(70 \%\) of the candidates passed in History and \(50 \%\) in Geography and \(20 \%\) students failed in both the subjects. If 500 students passed in both the subjects, then how many candidates appeared for the exam? (a) 1,000 (b) 1,500 (c) 2,500 (d) none of these

My salary is Rs. 12345 per month. The salary of my brother is \(10 \%\) greater than that of mine. The salary of my only sister is \(9.09 \%\) greater than my only brother. The salary of my wife is\(56 \frac{12}{23} \%\) less than the total salary of my brother and sister together, then the salary of my wife is : (a) greater than my sister's salary (b) \(33 \frac{11}{23} \%\) less than my sister's salary (c) equal to my salary (d) \(44 \frac{11}{22} \%\) greater than my own salary

The actual area of a rectangle is \(60 \mathrm{~cm}^{2}\), 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 : (a) \(5 \%\) (b) \(25 \%\) (c) can't be determined (d) none of these

Abhinav scores \(80 \%\) in Physics and \(66 \%\) in chemistry and the maximum marks of both the papers are \(100 .\) What per cent does he score in maths which is of 200 marks, if he scores \(80 \%\) marks in all the three subjects: (a) \(74 \%\) (b) \(84 \%\) (c) \(87 \%\) (d) \(83 \%\)

In the New York Stock Exchange there are \(45 \%\) female employees and thus the number of male employees is exceeded by \(72 .\) Hence the total no. of employees in the New York Stock Exchange is : (a) 540 (b) 720 (c) 7200 (d) 550

The square of a positive number is \(2,000 \%\) greater than the ' number itself, then the square of that number is : (a) 1762 (b) 1635 (c) 441 (d) 139

The shopkeeper increased the price of a product by \(25 \%\) so that customer finds it difficult to purchase the required amount. But somehow the customer managed to purchase only \(70 \%\) of the required amount. What is the net difference in the expenditure on that product? (a) \(10 \%\) more (b) \(5 \%\) more (c) \(12.5 \%\) less (d) \(17.5 \%\) less

The average earning of each member of the Ambani family is \(20 \%\) less than the average earning of each member of the Sahara family and the total earning of Ambani's family is \(20 \%\) more than the total earning of Saharas's family. The no. of family members in the Sahara is what per cent of the no. of family members of Ambani : (a) \(25 \%\) (b) \(20 \%\) (c) \(66.66 \%\) (d) none of these