Quantitative Aptitude - Arithmetic Ability Questions

If x + y = 10 and xy = 4, then what is the value of x4 + y4?

By selling 175 pineapples, the gain is equal to the selling price of 50 pineapples. What is the gain percentage?

What is the value of 10% of 150% of 400?

If (x + y):(x - y) = 11:1, find value of (5x + 3y)/(x - 2y).

Starting with 8000 workers, the company increases the number of workers by 5%, 10% and 20% at the end of first, second and third year respectively. The number of workers in the fourth yearwas

The cross­section of a canal is in the shape of an isosceles trapezium which is 3 m wide at the bottom and 5 m wide at the top. If the depth of the canal is 2 m and it is 110 m long, what is the maximum capacity of this canal? (Take π = 22/7)

If (x – y) = 7, then what is the value of (x – 15)3 – (y – 8)3?

If ab-1b=cb-1c=ac-1a, then ac+ba+cb