A car travels distance of 100 km at 50 km/h. The driver increases the speed of the car by 10 km/h for the next 200 km .find the average speed of the car.
Answers
Answered by
0
Step-by-step explanation:
total total distance travelled by car =300 km/hr
total time taken by car= 60km/hr
average speed =distance travelled/total time taken
= 300/60
= 50km/hr (and)
Answered by
1
Step-by-step explanation:
Avg speed is total distance/total time
total distance= 100 + 200 km = 300 km
time in first case= d/s= 2 hrs
time in second case= d/s= 200/60= 3.33 hrs
total time = 2 +10/3 = 16/3 hour
avg speed= total distance/ total time = 300/16/3 or 300*3/16 = 225/4 km/hr or 56.25 km/hr
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