List of top Quantitative Aptitude Questions

Total salary of three persons A, B and C is Rs. 144000. They spend 80%, 85% and 75% respectively. If their savings are in the ratio 8:9:20, find C's salary.

10 sheep and 5 pigs were brought for Rs. 6000. If the average price of a sheep is Rs. 450, find the average price of pig.

The population of a town is 155,625. For every 1000 males there are 1075 females. If 40% of the males and 24% of the females are literate, find the percentage of literacy in the town.

A person takes 3 hours to walk a certain distance and riding back. He could walk both ways in 5 hours. How long could it take to ride both ways.

12.5% of 80 is equal to

The smallest of the fractions given below is:

Three friends shared the cost of a television. If Amit, Bharat and Dinesh each paid Rs. 3000 and Rs. 1800 respectively, then Dinesh paid what percent of the total cost?

Which number should fill the blank space to complete the series: 1,2,4,5,7,8,10,11, ______

The average age of 29 boys of a class is equal to 14 years. When the age of the class teacher is included, the average becomes 15 years. Find the age of the class teacher.

In a certain zoo, there are 42 animals in one sector, 34 in the second sector and 20 in the third sector. Out of this, 24 graze in sector one and also in sector two. 10 graze in sector two and sector three, 12 graze in sector one and sector three. These figures also include four animals grazing in all the three sectors are now transported to another zoo. Find the total number of animals.

If \( x = 1 + 2a + 3a^2 + 4a^3 + \ldots \) (\(|a| < 1\)) and \( y = 1 + 3b + 6b^2 + \ldots\) (\(|b| < 1\)), then find \( 1 + ab + (ab)^2 + (ab)^3 + \ldots \) in terms of \(x\) and \(y\).

A and B throw with one die for a stake of Rs. 11 which is to be won by the player who first throws a 6. If A has the first throw, what are their respective expectations?

Two vertical lamp-posts of equal height stand on either side of a road 50 m wide. At a point \(P\) on the road between them, the elevation of the tops of the lamp-posts are \(60^\circ\) and \(30^\circ\). Find the distance of \(P\) from the lamp-post which makes angle of \(60^\circ\).

\(M\) is the centre of the circle. \(l(QS) = 10\sqrt{2}\), \(\ell(PR) = \ell(RS)\) and \(PR \perp QS\). Find the area of the shaded region. (\(\pi = 3\))}

A train crosses a platform 100 metres long in 60 seconds at a speed of 45 km/hr. The time taken by the train to cross an electric pole is:

A 20 litre vessel is filled with alcohol. Some of the alcohol is poured out into another vessel of equal capacity, which is then completely filled by adding water. The mixture thus obtained is then poured into the first vessel to capacity. Then \(6\frac{2}{3}\) litres is poured from the first vessel into the second. Both vessels now contain an equal amount of alcohol. How much alcohol was originally poured from the first vessel into the second?

It takes 6 technicians a total of 10 hours to build a new server from direct computer, with each working at the same rate. If six technicians start to build the server at 11:00 am, and one technician per hour is added beginning at 5:00 pm, at what time will the server be completed?

A ship 55 km from the shore springs a leak which admits 2 tonnes of water in 6 min; 80 tonnes would sink her, but the pumps can throw out 12 tonnes an hour. Find the average rate of sailing so that she may just reach the shore as she begins to sink.

If \( f\left(x + \frac{y}{8}, y - \frac{x}{8}\right) = xy \), then \( f(m,n) + f(n,m) = 0 \) is true:

In a 400 metre race around a circular stadium having a circumference of 1000 metres, the fastest runner and the slowest runner reach the same point at the end of the 5th minute for the first time after the start of the race. If the fastest runner runs at twice the speed of the slowest runner, what is the time taken by the fastest runner to finish the race?

A person closes his account in an investment scheme by withdrawing Rs. 10,000. One year ago he had withdrawn Rs. 6000. Two years ago he had withdrawn Rs. 5000. Three years ago he had not withdrawn any money. How much had he deposited approximately at the time of opening the account 4 years ago, if the annual simple interest rate is 10%?