Quantitative Aptitude - Arithmetic Ability Questions

What is the value of 36+729381+643

X, Y and Z can do a piece of work in 30,40 and 50 days respectively. All three of them began the work together but Y left 4 days before completion of the work. In how many days was the work completed?

Mandeep works 3 times as fast as Sampat. If Sampat can complete a job alone in 60 days, then in how many days can they together finish the job?

ABCD is a rectangle. P is a point on the side AB as shown in the given figure. If Dp = 13, CP = 10

The price of an article is cut by 24%, to restore to its original value, the new price must he increased by ______.

If 1/2 is added to a number and the sum is multipled by 3, the result is 21. Then the number is

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

What is the value of cosec -7π/6?