Quantitative Aptitude - Arithmetic Ability Questions

In an army selection process, the ratio of selected to unselected candidates was 4:1. If 90 less had applied and 20 less selected, the ratio of selected to unselected would have been 5:1. How many candidates had applied for the process?

What is the value of cosec -7π/6?

Manish, Mukesh and Sachin are Accountants. Mukesh can filea return in 5 hours and Sachin in 4 hours alone. All three together can do it in 2 hours. In what time (in hrs) will Manish do the work?

What should be the average speed of a car to cover a distance of 189 km in 3.5 hours?

If 27N4 is divisible by 11, then what is the value of N?

If a - b = 1 and ab = 6, then what is the value of a3- b3?

A fan is listed at Rs. 150 with a discount of 20% . What additional discount must be offered to the customer to bring the net price to Rs. 108 ?

The flight fare between two cities is increased in the ratio 11:13. What is the increase (in Rs) in the fare, if the original fare was Rs 12100?