Find real questions from previous competitive exam papers with answers and solutions.
Browse complete papersThe sum of K numbers is 2000 and their average is 50. If 91 is included into the list, then the new average is
51
49
52
53
Correct answer
51
The average age of a family of 3 members six years ago was 29 years. After that, a child was born. Today, the average age of the family is 27 years. The present age of the child is
6
5
4
3
Correct answer
6
The cost price of a TV set for a shopkeeper is Rs. 22,000/-. The shopkeeper increased its price by 15%. Then he sold the TV set at a discount of 20%. The actual loss for the shopkeeper in percentage is
5%
6%
7%
8%
Correct answer
5%
A shopkeeper sold a mobile at a profit of 8% to a second shopkeeper. The second shopkeeper sold it to a third shopkeeper at a profit of 6%. If the third shopkeeper paid Rs. 2862/-, the cost price of the mobile for the first shopkeeper is (in rupees)
2600
2250
2500
2400
Correct answer
2600
A sum of Rs. 12,000/- given at simple interest rate of 12% per annum becomes Rs. 16,320/- in T years. The value of T is (in years)
2
\(2\dfrac{1}{2}\)
3
4
Correct answer
2
The difference between compound interest and simple interest on an amount of Rs. A at 8% per annum for 2 years is Rs. 800/-. Then, the amount A is (in rupees)
Rs. 60,000/-
Rs. 80,000/-
Rs. 1,00,000/-
Rs. 1,25,000/-
Correct answer
Rs. 60,000/-
Mohan can repair an Instrument in 40 hours. Ram can repair the same instrument in 30 hours. Mohan and Ram work together to repair the same instrument for 8 hours. Then, Mohan goes away. The number of hours that Ram takes to complete the work is (in hours)
16
15
14
10
Correct answer
16
A person A can do work in 20 days. He works for 5 days and stops doing the work. Then, a second person B completes the remaining work in 9 days. If A and B work together, how long will they take to complete the work?
9 days
\(8\dfrac{1}{2}\) days
8 days
\(7\dfrac{1}{2}\) days
Correct answer
9 days
A train 80 meters long is running at 108 km/hr. The time that the train will take to pass a platform of 130 meters long is (in seconds)
12
10
8
7
Correct answer
12
Two trains of lengths 100 meters and 80 meters are moving in the same direction at speeds of 80 km/hr. and 60 km/hr. respectively. The time taken by the first train to cross the second train is (in seconds)
16.2
28.2
32.4
40.8
Correct answer
16.2