Quantitative Aptitude
Maths There are 15 questions on Quantitative Aptitude for the preparation of all competitive exams.
Questions
Manoj takes 30 seconds to cover a distance of 270 m on increasing his speed by 60%. If he travels at his original speed, how much time will he take to cover the same distance?
- 45 seconds
- 48 seconds
- 40 seconds
- 20 seconds
- None of these
A hall is 15 m long and 12 m broad. If the sum of the areas of the floor and the ceiling is equal to the sum of the areas of four walls, then the volume of the hall is
- 720 m3
- 900 m3
- 1200 m3
- 1800 m3
- None of these
A can do a piece of work in 80 days. He works on it for 10 days and then, B alone finishes the remaining work in 49 days. In how much time will A and B, working together, finish the work?
- 31 days
- 30 days
- 33 days
- 40 days
- None of these
While finding the average of 9 consecutive numbers starting from X, a student interchanged the digits of the second number by mistake and got the average 8 more than the actual average. Find the value of X.
- 13
- 15
- 17
- 18
- None of these
A, B and C complete a piece of work for Rs. 2000. A works for 8 days, B for 9 days and C for 12 days to complete the work. If their daily wages are in the ratio 4 : 5 : 4, what is the share of A?
- Rs. 512
- Rs. 768
- Rs. 675
- Rs. 800
- None of these
Three partners: A, B and C invested capital in the ratio 5 : 3 : 2 for time periods in the ratio 3 : 4 : 6. Find the ratio of their profits.
- 5 : 4 : 4
- 1 : 1 : 1
- 4 : 4 : 5
- Cannot be determined
- None of these
The difference between 90% and 85% of a number is 225. What is 90% of that number?
- 4000
- 4225
- 4500
- 4050
- None of these
A motorist travels a distance of 20 km at a speed of 55 km/h and travels at the speed of 65 km/h while returning. What is his average speed?
- 54.55 km/h
- 59.58 km/h
- 55.58 km/h
- 54.58 km/h
- None of these
The ratio among the angles of a quadrilateral is 6 : 4 : 5 : 3. If the greatest angle of a triangle is 30 less than 5/6th of the greatest angle of the quadrilateral and if another angle of triangle is 3/5th of the second largest angle of the quadrilateral, then find the third angle of the triangle.
- 50°
- 40°
- 60°
- 45°
- None of these
A group of 50 men took a dip in a water tank 40 m long and 20 m broad on a religious day. If the average displacement of water by a man is 4 m, then the rise in the water level in the tank will be
- 20 cm
- 25 cm
- 35 cm
- 50 cm
- None of these
A sum of money was invested at a certain rate of simple interest for 3 years. If the rate had been 3% higher, the amount received would be Rs. 390 more. Find the sum invested.
- Rs. 4333
- Rs. 5430
- Rs. 5000
- Rs. 4400
- None of these
A man sold an item for Rs. 6750 at a loss of 25%. What will be the selling price of the same item if he sells it at a profit of 20%?
- Rs. 10530
- Rs. 10800
- Rs. 10350
- Rs. 11340
- None of these
What will come in place of the question mark (?) in the following number series?
3 11 35 107 ?
- 242
- 256
- 296
- 323
- None of these
What will come in place of the question mark (?) in the following number series?
2 8 ? 32 50
- 21
- 29
- 27
- 18
- None of these
The ratio of milk to water in a mixture of 189 litres is 7 : 2. To make a new mixture containing milk and water in the ratio 3 : 2, the amount of water to be added is
- 46 litres
- 66 litres
- 56 litres
- 50 litres
- None of these