Quantitative Aptitude - Arithmetic Ability Questions

If(x + y)2 = xy + 1 and x3 – y3 = 1, then what is the value of x – y?

Profit of Rs 187200 has to be divided among three partners Amit, Brijmohan and Chiranjeev in the ratio 1:2:5. How much does Chiranjeev get?

In a mixture, unbroken and broken rice grains are in the ratio 3 : 2. How much fraction of the mixture must be drawn off and substituted with broken grains, so that the ratio of unbroken and broken grains becomes 1 : 1?

If p3 - q3 = (p - q) ( (p - q)2 + x p q ) then value of x is

The average age of 80 boys in a class is 15 years. The average age of a group of 15 boys in the class is 16 years and the average age of another 25 boys in the class is 14 years. What is the average age of the remaining boys in the class?

The average marks in science subject of a class of 20 students is 68. If the marks of two students were misread as 48 and 65 of the actual marks 72 and 61 respectively, then what would be the correct average?

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

A train has to cover a distance of 900 km in 25 hours. What should be its average speed in meters/second?