Quantitative Aptitude - Arithmetic Ability Questions

A and B can together do a piece of work in 10 days. If A works with twice of his efficiency and B works with an efficiency 1/3rd less than his efficiency, then the work gets completed in 6 days. In how many days can A and B do the work alone respectively?

Find the standard deviation of {11, 7, 10,13, 9}

A vessel, full of water, weighs 24 kg. When the vessel is 1/4 full, it weighs 9 kg. Find the weight of empty vessel.

A, B and C are three students. A got 18% more marks than B and 12% less than C. If B got 220 marks, then how much marks C has got?

In ∆PQR, straight line parallel to the base QR cuts PQ at X and PR at Y. If PX:XQ = 5:6, then the XY:QR will be

5% of a = b, then b% of 20 is the same as __________.

Find the compound amount if $1200 is deposited at 8% interest for 11 years if interest is compounded continuously

In the following question, select the odd word from the given alternatives.