Quantitative Aptitude - Arithmetic Ability Questions

Robin can do a work in 10 hours. Pradeep and Robin together can do the same work in 4 hours. Pradeep and Nitin together can do the samework in 5 hours. In how many hours Nitin alone can complete the same work?

Akhilesh is two times as good a workman as Bansi and therefore is able to finish a job in 39 days less than Bansi. Working together, they can do it in

The difference between cost price and selling price is Rs 494. If loss percentage is 19%, then what is the selling price (in Rs)?

If sec -5π/4 = x, then the value of x is

On Selling a toy at 20/31 of the marked price there is a loss of 20%. What will be the ratio of marked price and cost price of the toy?

The points A(3,­-2), B(1,4) and C(­-2,x) are collinear. What is the value of x?

If the value 5 = 2.236,then calculate the value of 405 - 1280-125

If a - b = -6 and a2 + b2 = 44, then ab is