Quantitative Aptitude - Arithmetic Ability Questions

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?

Sum of a fraction and thrice its reciprocal is 31/6. What is the fraction?

The average weight of P, Q and R is 45 kg. If the average weight of P and Q be 36.5 kg and that of Q and R be 52 kg, then what is the weight (in kgs) of Q?

A can do a work in 20 days and B in 50 days. If they work on it together for 5 days, then what fraction of work is left?

Sum of lengths of all edges of a cube is 84 cm, find its volume?

A missile travels at 1116 km/h. How many metres does it travel in one second?

The average of five consecutive even numbers is 40. What is the value of smallest of these numbers?

What is the value of tan4A + tan2A?