Quantitative Aptitude - Arithmetic Ability Questions

In a school 60% of the students are girls. If number of boys is 480, then what is the total number of students in the school?

If α + β = 90° and α:β = 2:1, then the ratio of cosα to cosβ is

If 7x + 6y = 5xy and 10x ­- 4y = 4xy, then value of x and y is

If cosαcosβ=m and cosαsinβ=n,then the value of m2+n2 cos2β is

The cost price of an article is x. It is marked up by 120%. It is sold at Rs 8800 after giving 20% discount. What is the value (in Rs) of x?

In an army selection process, the ratio of selected to unselected was 6:1. If 90 less had applied and 30 less selected, the ratio of selected to unselected would have been 8:1. How many candidates had applied for the process?

The radius of a sphere and hemisphere are same. The ratio of their total surface area is

If a taxi going at 40 km/hr takes 25 minutes to travel a certain distance, by how much should it increase its speed (in km/hr) to travel the same distance in 20 minutes?