Quantitative Aptitude - Arithmetic Ability Questions

What is the value of Tan 45° + 4/√3 Sec 60°?

If a - b = 2 and ab = 15, then what is the value of a3- b3?

What is the value of 5.6x0.36+0.42x3.20.8 x 2.1 ?

The length of a rectangle is increased by 25%. To maintain the same area, the breadth has to be decreased by

If a + b + c = 0 , then the value of a3 + b3+ c3 is

A sum of Rs 125 is divided among u, v and w in such a way that u gets Rs 10 more than v and v gets Rs 5 more than w. What is the ratio of their shares?

30 men can do a piece of work in 16 days working 8 hrs a day. How many men are needed to complete another work, which is twice the first one, in 10 days working 12 hrs a day?

The following are the steps involved in solving the above problem. Arrange them in sequential order.

The ratio of the amount of work done by (x-1) labours in (x+1) days and that done by (x+1) labours in (x+2) days is 5 : 6. Then the value of x is