A boat makes a 120-mile trip downstream in 3 hours but makes the return trip in 4 hours.
If b = the rate of the boat in still water and c = the rate of the current, which of the following equations represents the trip upstream?
3(b - c) = 120
4(b - c) = 120
4(b + c) = 120

Question

25-11-2016
Mathematics

contestada

A boat makes a 120-mile trip downstream in 3 hours but makes the return trip in 4 hours.
If b = the rate of the boat in still water and c = the rate of the current, which of the following equations represents the trip upstream?
3(b - c) = 120
4(b - c) = 120
4(b + c) = 120

Respuesta :

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Аноним Аноним · Answer 1 · 2016-11-27T04:53:58+01:00

4(b-c)=120.

The speed is the spped of the boat minus the speed of the stream, since it's going upstream. If it was downstream, it would have been plus.
It's a 4, not a 3 since that represents the time that it goes upstream.

It all uses the formula S=v*t and all the possible variants of it.

I hope my answer has come to your help. Thank you for posting your question here in Brainly. We hope to answer more of your questions and inquiries soon. Have a nice day ahead!

jhbtvcfvbvhtrew322 jhbtvcfvbvhtrew322 · Answer 2 · 2020-12-29T20:18:07+01:00

jhbtvcfvbvhtrew322 jhbtvcfvbvhtrew322

29-12-2020

Answer:

4(b-c)=120

Step-by-step explanation:

Answer Link

A boat makes a 120-mile trip downstream in 3 hours but makes the return trip in 4 hours. If b = the rate of the boat in still water and c = the rate of the current, which of the following equations represents the trip upstream? 3(b - c) = 120 4(b - c) = 120 4(b + c) = 120

Respuesta :

Otras preguntas

A boat makes a 120-mile trip downstream in 3 hours but makes the return trip in 4 hours.
If b = the rate of the boat in still water and c = the rate of the current, which of the following equations represents the trip upstream?
3(b - c) = 120
4(b - c) = 120
4(b + c) = 120