Quantitative Aptitude - Arithmetic Ability Questions

Two students appeared for an examination. One of them secured 9 marks more than the other and his marks were 56% of the sum of their marks. The marks obtained by them are

The mean of the 5 smallest numbers from a group is 15 while the mean of all the 13 members of the group taken together is 17. What is the mean of the 8 largest numbers?

A, B and C can finish a job working alone in 20, 30 and 60 days respectively. They all work together for 1 day, then A and B quit. How many days C working alone will take to finish the remaining part of the job?

The diameters of two cylinders are in the ratio 3:2 and their volumes are equal. The ratio of their heights is

The volume of a cube is 166.375 cm3. Find its side (in cm).

If P = 5X and Q = X, then P is how much percentage more than Q?

Reflection of the point (2,­7) in the y­axis is

Let ΔABC and ΔABD be on the same base AB and between the same parallels AB and CD. Then the relation between areas of triangles ABC and ABD will be