Quantitative Aptitude - Arithmetic Ability Questions

Roshan's current age is three years less than 1.5 times that of Usha's. 12 years ago Usha's age was three years more than half of Roshan's age. What is Roshan's present age in

A does 1/2 as much work as B and C does1/2as much work as A and B together. If C alone can finish the work in 40 days, then together all will finish the work in

The sum of a fraction and 10 times its reciprocal is 37/4. What is the fraction?

Two pipes X and Y can fill an empty tank in 16 hours and 20 hours respectively. Pipe Z alone can empty the completely filled tank in 25 hours. Firstly both pipes X and Y are opened and after 6 hours pipe Z is also opened. What will be the total time (in hours) taken to completely fill the tank?

What is the value of sin 300°?

If √(1+tan2A) = x, then the value of x is

30% discount is offered on an item. By applying a promo code the customer wins 5% cash back. What is the effective discount?

If x+1x ≠0 and x3+1x3 = 0, then the value of x+1x4 is :