Quantitative Aptitude - Arithmetic Ability Questions

A can complete a task alone in 8 days, while B takes 12 days to do it by herself. Together with C it takes them 4 days to complete the work. If C and D together can complete the task in 15 days, then how many days will D need to complete the task by herself?

In the following question, select the odd number pair from the given alternatives.

If a3 + b3 = 28 and a + b = 4, then what is the value of ab?

If A% of A is 196, then what is the value of A?

A car travels 80 km in 2 hours and a train travels 180 km in 3 hours . The ratio ofspeed of the car to the train is

A man walks at a speed of 3 kmph. He doubles his speed after reaching exactly half way. He walks for 5 hours in all. What is the total distance travelled by him?

Select the odd word/letters/number/number pair from the given alternatives.

18 men or 36 boys working 6 hours a day can plough a field in 24 days. In how many days will 24 men and 24 boys working 9 hours a day plough the same field ?