Quantitative Aptitude - Arithmetic Ability Questions

Two numbers are 40% and 50% lesser than a third number. By how much percent is the second number to be enhanced to make it equal to the first number?

If sinθ+cosθsinθ-cosθ=3,then the value of sin4θ-cos4θ is

In an army selection process, the ratio of selected to unselected was 3:1. If 60 less had applied and 30 less selected, the ratio of selected to unselected would have been 5:1. How many candidates had applied for the process?

What number should be added to each of 4, 16, 18 and 58 so that the resulting numbers will be in proportion in the given order?

Given a -­ b = 2, a3 - b3=26 then (a + b)2 is

If after giving a discount of 18%, a book is sold for Rs 1599, then what will be the marked price (in Rs) of the book?

A can complete a work in 20 days and B can complete the same work in 25 days. If both of them work together, then in 3 days what percent of the total work will be completed?

A man starts walking from a place X and reaches the place Y in 12 hours. He travels 3/7th of the total distance at the speed of 3 km/hr and the remaining distance at the speed of 4 km/hr. What is the distance (in km) between X and Y?