Question

If mohini runs at a speed 25 km per hour, how long will she take to run a 800 metre race ?

Answer 1

25 km per hour in meter per sec is equal to 125/18 so 800 meters is equal to 800/125/18 and that equals to 32 x 18/5 is equal to 6.4 x 18 and that equals to 115.2 seconds.