Quantitative Aptitude - Arithmetic Ability Questions

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?

Working together A and B can do a job in 40 days, B and C in 36 days and all three together in 24 days. In how many days can B alone do the job?

16/3 =

If x - 1/x = 1 then what is the value of 1x1x-1-1x+1+1x2+1-1x2-1?

Find the Odd one out.

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

If the hour hand of a clock moves by 18 deg then by how many degrees does the minute hand move during the same time?

If sum of the areas of the circumcircle and the incircle of an equilateral triangle is 770 cm2, then what is the area (in cm2) of the triangle?