Quantitative Aptitude - Arithmetic Ability Questions

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

Manish is four times as efficient as Puneet. Manish takes 90 days less than Puneet to complete a book. If both of them work together, then in how many days the book will be completed?

What is the average of all numbers between 11 and 80 which are divisible by 6?

An equilateral triangle ABC is inscribed in a circle of radius 20√3.
What is the length of the side of the triangle?

If the value of a company stock drops from Rs. 25 per share to Rs. 21 per share, the percentage decrease per share is

If A is 40% more than B, then B is how much percent less than A?

A total amount of Rs. 1560 is to be divided among A, B, C such that A gets 50% of what B gets and B gets 20% of what C gets. How much will B get ?

If x = 1 – y and x2 = 2 – y2, then what is the value of xy?