A car has to cover 280 km in 5 hours. For the first three hours, it travels at a speed of 50 km per hour. What should be its speed after that to reach the destination in the desired time?
Please give an explanation too.
Answers
Answer:
Hence, the cars should be 65kmph after first 3 hours if it has to cover 280 km in 5 hours.
Hope I've helped you.
Step-by-step explanation:
distance covered by him in first 3 hours= (speed-time)
= 50 kmph x 3h
= 150 km
Distance left= 280 150 = 130 km
Time left = 5 - 3 = 2hrs
Speed by which he covered 130 km in 2 hrs = 130/2
= 65kmph
Hence, the cars should be 65kmph after first 3 hours if it has to cover 280 km in 5 hours
Answer:
65km/h
hope it helps!
please mark as brainliest!!
thanks!!!
Step-by-step explanation:
distance to be covered: 280km
time to cover the distance: 5hrs
time spent: 3 hrs
distance covered in 3 hrs: 3x50 = 150km
time left to cover the distance: 5hrs - 3hrs = 2hrs
distance left to be covered: 280km - 150km = 130km
hence, we must be able to cover 130 km in 2 hrs.
speed = distance/time
= 130/2 = 65km/h
hence, in order to cover the remaining distance in time, the car must travel at a speed of 65km per hour