Quantitative Aptitude - Arithmetic Ability Questions

What is the value of cosec 3π/4?

A man travels 50 km at speed 25 km/h and next 40 km at 20 km/h and there after travel 90km at 15 km/h. His average speed is

In each question two equations numbered I and II are given,you haveto solve both the equation and choose the correctanswer.

I. x2+ 30x + 81 = 0

II.y2-9y -162 = 0

If a : b is 32 : 35 and b : c is 21 : 32, then a : c is?

At 24% discount the selling price of a washing machine is Rs 38000, what is the selling price if the discount is 40%?

A cone of radius 3.5 cm and height 27 cm is completely filled with water. This water is emptied into an empty cylindrical vessel of radius 2.1 cm. What will be the height of water in this vessel? (Take π = 22/7)

Lokesh starts a business with Rs 240000. After 3 months Vishal joins him with Rs 210000. At the end of the year what will be the ratio of their profit?

x and y are two numbers such that their mean proportion is 8 and third proportion is 512. What is the value of x and y?