Mathematics: Aboat on the potomac river travels the same distance downstream in 2/3 hour as it does going upstream in 1 hour. if the speed of the current is 3 mph, find the speed of the boat in still water

Aboat on the potomac river travels the same distance

Ответ:

apowers6361

03.01.2022

$\bf \begin{array}{ccccllll}
&distance&rate&time(hrs)\\
&-----&-----&-----\\
upstream&d&r-3&\frac{2}{3}
\\\\
downstream&d&r+3&1
\end{array}\\\\
-----------------------------\\\\
thus\qquad 
\begin{cases}
d=(r-3)\frac{2}{3}
\\\\
d=(r+3)1
\end{cases}\qquad d=d\qquad thus
\\\\\\
(r-3)\cfrac{2}{3}=(r+3)1$

notice, the distance is the same, upstream or downstream, thus is "d" for both

solve for "r"

0,0(0 оценок)

Ответ:

kelebsessoms89

09.01.2021

Mathematics

240+30x

Step-by-step explanation: Distribute the 30

0,0(0 оценок)

Aboat on the potomac river travels the same distance downstream in 2/3 hour as it does going upstream in 1 hour. if the speed of the current is 3 mph, find the speed of the boat in still water

Ответ:

Ответ:

Ask your question to the AI advisor

More tips

Answers on questions: Mathematics

Ask an AI advisor a question