A missile travels at 1422 km/h. How many metres does it travel in one second?

A person started his journey in the morning.  At 11.a.m he covered of the journey and on the same day at 4.30 p.m. he covered  of the journey. He started his journey at? 

A travels 20 km with a speed of 40 km/hr. He travels another 45 km with a speed of 15 km/hr. what is his average speed for the entire journey?

A bus can travel $$ 12{2\over5}$$ Km in one hour. How much distance will it cover in $$ 2{3\over4}$$ hours? 

A cyclist cycles 8 km at 15 km/hr and a further 4 km at 20 km/hr. Find the average speed in km/hr. 

A man can swim to a place 120 km distant and come back in 35 hours. He finds that he  can swim 6 km against the stream in the same time as 8 km with the stream. Find the ratio of speed of man in still water to that of stream?

The ratio between speed of boat in down stream and speed of stream is 9 : 1. If the speed of current is 3 km/hr, then find the distance travelled in upstream in 5 hours. 

A man left 9 minutes early than the scheduled time and in order to reach the destination 378 km away in time, it has to slow its speed by 6 km/h from the usual. What is the usual speed (in km/hr.) of the man?