A car left from Uphere at 9:00 am and arrived at Downthere, 340 km away at 1:15 pm the same day. Find the average speed of the car in kilometers per hour.
To find the average speed of the car, we need to divide the total distance traveled by the car by the total time taken.
First, let's calculate the total time taken. The car left Uphere at 9:00 am and arrived at Downthere at 1:15 pm, which means the total time taken is 4 hours and 15 minutes.
To convert the minutes to hours, we divide the minutes by 60:
15 minutes ÷ 60 = 0.25 hours
Now we can add the hours and minutes:
4 hours + 0.25 hours = 4.25 hours
Next, we calculate the average speed by dividing the total distance traveled (340 km) by the total time taken (4.25 hours):
Average Speed = Total Distance ÷ Total Time
= 340 km ÷ 4.25 hours
Finally, let's calculate the average speed in kilometers per hour:
Average Speed = 340 km ÷ 4.25 hours
= 80 km/h
Therefore, the average speed of the car is 80 kilometers per hour.
avg speed = distance/time
9:00 to 13:15 is 4:15 or 4.25 hours
speed = 240km/4.25hr = 56.47 km/hr