Quantitative Aptitude - Arithmetic Ability Questions

Ajit is two times as good a workman as Badrinath and therefore is able to finish a job in 30 days less than Badrinath. Working together, they can do it in

Surya works 3 times as fast as Ramya and is able to complete a work in 40 days less than the number of days taken by Ramya. Find the time in which they can complete the work together.

Of the 5 numbers whose average is 78, the first is 2/11 times the sum of other 4. The first number is

At 22% discount the selling price of a refrigerator is Rs 26000, what is the selling price if the discount is 40%?

The LCM of 72 and 84 is:

The diameter of a circle is equal to the side of the square. What is the area of the square if the area of the circle is 64π sq cm?

If P = 7 + 4√3 and PQ = 1, then what is the value of 1/P2 + 1/Q2?

If a shopkeeper sells an item at Rs 4200 which is marked as Rs 4800, then what is the discount (in %) that he is offering?