A man runs with a speed of 15.84 km/hr. He completes 12 rouds of a circular ground in one hour. Find the area of the ground

A man walks at a speed of 4 km/hr and runs at a speed of 8 km/hr. How much time will the man require to cover a distance of 24 km if he completes half of his journey walking and half running?

A man has to cover a distance of 40 kms. He walks 16 kms at the speed of 4 kms/hr and the rest is covered by Tongs. If he had covered 16 kms by Tongs and the rest by the walking at the speed of 4kms/hr, then he would have taken 1 hour more find the speed of the Tonga.

A man starts running from point P at 11:00 a.m. with a speed of 10 km/hr. He runs for 2 hourse and then takes a 1 hour rest. He continues this till he is caught by another man who starts at 2:00 pm from point P and runs non- stop at a speed of 15 km/hr towards the first man. At what time (in pm) will the first man be caught?

A train runs of 2 hrs at the speed of 40 km/h and then runs for 4(1)/(2) hrs at the speed of 60 km/h and then the runs for 3(1)/(2) hrs, at the speed of 70 km per hour. Find the average speed of the train.