Quantitative Aptitude - Arithmetic Ability Questions

Of the three numbers, the average of the first number and the second number is 37 more than the average of second number and third number. What is the difference between the first and the third number?

Working 5 hours a day, Shivam can read a book in 24 days. How many hours a day should he work so as to finish the same work in 8 days?

30% of a number exceeds 25% of the same number by 27. What is the value of the number?

Area of _____ equals half the product of its diagonal.

What is the value of (1+cosA)/(1-­cosA)?

The point R(a,b) is first reflected in origin to R1 and R1 is reflected in X-axis to (-5,1). The co-ordinates of point R are?

If 2x-12x = 5, then what is the value x2 + 116x2 - 2

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