Quantitative Aptitude - Arithmetic Ability Questions

Badki can bake 45 cakes in 9 hours, Badki and Chutki together can bake 80 cakes in 10 hours. How many cakes Chutki can bake in 40 hours?

A train is moving at the speed of 72 km/hr. How many seconds will it take to cover a distance of 1400 m ?

A bookseller bought 500 text books for  20,000. He wanted to sell them at a profit so that he get 50 books free. At what profit percent should he sell them?

There are 8 equidistant points A, B, C, D, E, F, G and H (in same order) on a circle. What is the value of ∠FDH (in degrees)?

∆ABC is right angled at B. BD is an altitude. AD = 4 cm and DC = 9 cm. What is the value of BD (in cm)?

If x + √5 = 5 + √y, and x, y are positive integers, then the value of x+yx + y

If x = 6+26, then what is the value of x-1 + 1x-1 ?

If a - b = 1 and ab = 6, then what is the value of a3- b3?