Quantitative Aptitude - Arithmetic Ability Questions

A retailer gets a discount of 40% on the printed price of an article. The retailer sells it at the printed price. His gain percent is

Both X and Y together can complete a work in 12 days and Y alone can complete the same work in 30 days. In how many days will X alone complete the work?

Product of 9b2, 3a2 and 4ab is

What is the value of sin ­-300°?

Select the odd word/letters/number/number pair from the given alternatives.

What is the equation of a line having a slope -1/3 and y-intercept equal to 6?

The orthocentre of an obtuse­angled triangle lies

The length and breadth of a rectangle are 24 cm and 7 cm respectively. Calculate its perimeter (in cm).