Quantitative Aptitude - Arithmetic Ability Questions

Mother can bake 20 cakes in 4 hours, Mother and Dadima together can bake 60 cakes in 10 hours. How many cakes Dadima can bake in 30 hours?

The mean of the data 1, 1/2, 1/2, 3/4, 1/4, 2, 1/2, 1/4, 3/4 is

If the length of one side and the diagonal of a rectangle are 8 cm and 17 cm respectively, then find its perimeter

If 2y cosθ = x sinθ and 2x secθ - y cosecθ = 3 then what is the value of x2+4y2

If a sum of money doubles itself in 8 yrs, then the interest rate in percentage is ?

A 220 metres long train takes 33 seconds to cross a 440 metres long bridge. How much time (in seconds) will the train take to cross a 350 metres long bridge?

Tanya got an increment of 15% in her salary. If her enhanced salary is Rs.14,030. What was her original salary?

If 3x^2 + ax + 4 is perectly divisible by x - 5, then the value of a is :