SOLUTION: 1:A boat travelled a certain distance upstream at a speed of 15kmh^-1 and returned at 22.5kmh^-1 find the the average speed for The whole journey. 2:a motor vehicle driver travell

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Question 1188746: 1:A boat travelled a certain distance upstream at a speed of 15kmh^-1 and returned at 22.5kmh^-1 find the the average speed for The whole journey.
2:a motor vehicle driver travelled 60km from point P to point Q at an average speed of 30km/h and another 60km from point Q to R at an average speed of 20 km/h . find the average speed from point P to point R
Answer by ikleyn(52776) About Me  (Show Source):
You can put this solution on YOUR website!
.

For problem (1), see the link

https://www.algebra.com/algebra/homework/Average/Average.faq.question.1188745.html

https://www.algebra.com/algebra/homework/Average/Average.faq.question.1188745.html


A TWIN problem is solved there, giving a TEMPLATE to you.


Use this template to solve the given problem.

Do it in the same way.


Only the numbers are different - the solution methodology is the same.


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