Quantitative Aptitude - Arithmetic Ability Questions

∆LMN is right angled at M. If m ∠N = 45°. What is the length (in cm) of MN, if NL = 6√2 cm?

A gun is fired at a distance of 1.7 km from Ram and he hears the sound after 25 seconds. The speed of sound in meter per second is

The reciprocal of the sum of the reciprocals of 8/7 and 5/6 is:

The reciprocal of the sum of the reciprocals of 2/9 and 7/10 is

A car travels a certain distance at 24 km/h and comes back at 36 km/h. Find the average speed for total journey.

To cover a distance of 333 km in 2 hours by a car, what should be the average speed of the car (in meter/second)?

If a taxi going at 40 km/hr takes 25 minutes to travel a certain distance, by how much should it increase its speed (in km/hr) to travel the same distance in 20 minutes?

A batsman has a certain average of runs for 12 innings. In the 13th inning he scores 96 runs thereby increasing his average by 5 runs. What will be his average after 13th inning?