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C. the colleg the average speed. You make a trip which entrails traveling 900km by train at a speed of 60km/hour, 3000km by boat at an average of 25km/hour, 400km by plane at 350 km/hour and finally 15km by taxi at 25km/hour, what is your average speed for the entire distance?



User Kathalina
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1 Answer

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Answer: To find the average speed, we need to use the formula:

average speed = total distance / total time

We can first calculate the total distance, which is:

total distance = 900 km + 3000 km + 400 km + 15 km = 3315 km

To calculate the total time, we need to find the time taken for each leg of the journey:

time taken for train journey = distance / speed = 900 km / 60 km/hour = 15 hours

time taken for boat journey = distance / speed = 3000 km / 25 km/hour = 120 hours

time taken for plane journey = distance / speed = 400 km / 350 km/hour = 1.14 hours

time taken for taxi journey = distance / speed = 15 km / 25 km/hour = 0.6 hours

Therefore, the total time taken for the entire journey is:

total time = 15 hours + 120 hours + 1.14 hours + 0.6 hours = 137.74 hours

Now we can calculate the average speed:

average speed = total distance / total time = 3315 km / 137.74 hours ≈ 24.05 km/hour

Therefore, the average speed for the entire distance is approximately 24.05 km/hour.

User Tao Wang
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