Quantitative Aptitude - Arithmetic Ability Questions

B is thrice as efficient as A and C is 0.75 times as efficient as A. What is the ratio of number of days taken by A, B and C when they work individually?

a and b are irrational numbers such that a+b = q is a rational number; then a­b is

A shopkeeper marks up his wares by 60% and offers 25% discount. What will be the selling price (in Rs) if the cost price is Rs 1600?

The distance between the centres of two circles is 61 cm and their radii are 35 cm and 24 cm. What is the length (in cm) of the direct common tangent to the circles?

What is the value of tan 300°?

What is the quotient when 7251 is divided by 66?

What is the sum of all natural numbers between 100 and 400 which are divisible by 13?

Two water squash mixtures, the first with a water-to-squash ratio of 5:1 and the letter with a ratio of 3:1 are blended in the ratio 3:2. What is the final water : squash ratio in the blend?