Quantitative Aptitude - Arithmetic Ability Questions

16/3 =

A does 50% of a work in 12 days. He then calls in B and they together finish the remaining work in 8 days. How long B alone would take to complete the whole work?

Tapas, Avi and Rishi shared a cake. Tapa had 1/2 of it, Rishi had 1/3 of it, and Avi had the rest. What was Avi's share of the cake?

Find the Odd one out.

If ABCDEF is a regular hexagon, then what is the value (in degrees) of ∠ADB?

S does half as much work as T in 1/7 of the time taken by T. If together they take 21 days to complete a work, then how may days shall S take to complete that work alone?

S and T can finish a work in 50 days. They worked together for 20 days and then left. How much of the work is left?

The marked price of an article is 10/7 of the cost price and the selling price of that article is 4/5 of the marked price. What is the profit percentage?