Quantitative Aptitude - Arithmetic Ability Questions

15 years ago Cynthia was thrice as old as Brittany. The sum of their present ages is 94 years. How old is Brittany now?

What is the average of all numbers between 9 and 90 which are divisible by 8?

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?

What will be the net discount percentage of three successive discounts of 20%, 10% and 30%?

A book is sold at three successive discounts of 20%, 20% and 10%. What is the net discount (in percentage)?

If 2cosec2A = x, then the value of x is

Find the odd number from the given alternatives.

In the following question, select the odd word from the given alternatives.