A truck moves with a speed of 30 km/h for 2 h 30 min. What is the total distance covered by the truck during the whole journey?
50 km
100 km
75 km
60 km
Distance = time x speed = 2.5 x 30 = 75 km
A bus moves with a speed of 40 km/h and covers a distance of 20 km. What is the total time taken by the bus during the whole journey?
A car covers 30 km at a uniform speed of 30 km/h. What should be its speed for the next 90 km if the average speed of the entire journey is 60 km/h?
Two trains ,each having a speed of 30km/h,are headed at each other on same track.A bird flies off one train to another with a constant speed of 60km/h when they are 60km apart till before they crash.the distance covered by the bird
A.20km
B.40km
C.60km
D.30km