Question

A car covered the first 100 km at a speed of 50 km/h. It covered next 140 km at a speed of 70 km/h. What is its average speed?

• A. 60 km/ h
• B. 62 km/h
• C. 58 km/h
• D. 64 km/h

Answer 1

Answer:

A. 60 km/ h

Average Speed = Total distance travelled/Total time taken Car covered first 100km at a speed of 50km/h Time taken = 100/50 = 2 Next 140 km at speed of 70km/h Time taken = 140/70 = 2 Total distance = ( 100 + 140 ) = 240km Total time taken = 4 h Average speed = 240 /4 = 60 km/h