Question

2. (a) You can take a trip which entails travelling 900 km. by train at an
average speed of 60 km. per hour, 3000 km. by boat at an average of
25 km. per hour, 400 km. by plane at 350 km. per hour and finally 15
km. by taxi at 25 km. per hour. What is your average speed for the
entire distance?
مل​

Answer 1

The average speed for the entire distance covered during the trip is 31.56 km/hr.

Step-by-step explanation:

Required formula:

• Average speed for the entire journey = [Total Distance covered for the trip] / [Total Time]  

• Time = Distance/Speed

According to the data in the question, we get

Total Distance travelled during the trip = 900 + 3000 + 400 + 15 = 4315 km

and,

Based on the second formula we get,

Total time of the entire journey is given by,

= [$\frac{900}{60} + \frac{3000}{25} + \frac{400}{350} + \frac{15}{25}$] hr

= [15 + 120 + 1.14 + 0.6] hr

= 136.74 hr

Thus, substituting the values of total distance and total time in the first formula, we get

Average Speed for the entire distance is given by,

=  [$\frac{4315}{136.74}$] km/hr

= 31.56 km/hr

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Also View:

It took a car 6 hours to cover the distance between points A and B with the speed of 50mp/h. How long will it take a bus to cover the same distance, if it travels at 40mp/h?

https://brainly.in/question/13203194

Tracey ran to the top of a steep hill with an average pace of 6 miles per hour she took the exact same trail back down. to her relief the decend was much faster. the average speed rose to 14 miles per hour if entire journy took tracey 1 hour to complete and she did not stop anywhere what is the length of the trail in miles in miles one way.

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Answer 2

Answer:

Distance is 900 km by Train

Average Speed is 60 km/hr

In the next the distance is 3000 km by plane

next average speed is 500 km/hr

and Distance is 400 km by boat

Average speed is 25km/hr

then Distance is 15 km by Taxi

Average speed is 45 km/hr

since Time = Distance /speed

therefore, 900/60 = 15hr by train

3000/500 = 6hr by plane

400/25 = 16hr by boat

15/45 = 1/3 hr by taxi

The toatl distance is 900+3000+400+15 = 4315 km

The total time is 15+6+16+1/3 = 37+1/3

= 112/3

= 37.333 hr

Therefore total average speed = Total distance /Total time

= 4315/37.333

Average speed of the entire jorney is = 115.5906 km/hr