Quantitative Aptitude - Arithmetic Ability Questions

Vikash purchased 5 bananas for Rs.4 and sold 4 bananas for Rs.5. Calculate his % profit?

What is the average of 90, 250, 240, 204, and 616?

When 2x + 2x = 3, then x3 + 1x + 2 value is

Reflection of the point (­1,4) in the x­axis is

2sin[(C+D)/2].sin[(D­-C)/2] is equal to

Factorise x2 + 3x -­ 18

What is the least number that should be added to the product 11 x 12 x 13 x 14 to make it a perfect square?

In a mixture of 45 litres, the ratio of liquid A and liquid B is 7 : 2. If 11 litres of liquid B is added to the mixture, then what will be the ratio of liquid A and liquid B in the new mixture?