Quantitative Aptitude - Arithmetic Ability Questions

For the inequation x^2–7x + 12 > 0, which one of the following is correct ?

Area of 4 walls of a cuboid is 448 sq cm, its length is 18 cm and height is 8 cm. What is its breadth (in cm)?

If 5(4­-x) - ­4 < 3x - ­2 > 4x - 6; then the value of x is

The discount offered on a Shirt of Rs 500 and a pair of Trousers of Rs 1000 is 20% and 40% respectively. If Ajay bought 2 Shirt and 3 pair of Trousers then what was the effective discount ( in %) he recieved?

If x = 2+32-3, then what is the value of x2+x-9 ?

A plane flies a distance of 1800 km in 5 hours. What is its average speed in meters/second?

Excluding stoppages, the speed of a bus is 60 kmph and including stoppages, it is 45 kmph. For how many minutes does the bus stop per hour?

The average marks in science subject of a class of 20 students is 68. If the marks of two students were misread as 48 and 65 of the actual marks 72 and 61 respectively, then what would be the correct average?