Quantitative Aptitude - Arithmetic Ability Questions

A shopkeeper sells wheat at a profit of 20% and for weighing uses a weight which is 10% less than the actual weight. What is his total profit percentage?

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?

If y=2secθ and x=3tanθ then x29-y24 is

If x + [1/(x + 7)] = 0, then what is the value of x – [1/(x + 7)]?

The sum of three numbers is 2, the 1st number is 1/2 times the 2nd number and the 3rd number is 1/4 times the 2nd number. The 2nd number is

If -5x3+2 = x-6, then find the value of x?

If x = a cosθ+ b sinθ and y = b cosθ- a sinθ, then x2 + y2 is equal to

If x = 11, the value of x5 - 12x4 + 12x3 - 12x2 + 12x - 1 is