Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

a123

  • 4 years ago

A boy can row a boat at a constant rate of 5 mi/hr in still water. He rows upstream for 15 minutes and downstream, returning to his starting point in another 12 minutes. What is the rate of the current? What is the total distance traveled?

  • This Question is Closed
  1. LeonardJ
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    15/60 = D/(5-C) 12/60 = D/(5+C) C = CURRENT RATE D = 1/2 TOTAL DISTANCE

  2. robtobey
    • 4 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Rate * Time = Distance. Solve the following for c, the speed of the current in miles/hour:\[(5-c)\frac{15}{60}\text{ = }(5+c)\frac{12}{60}\]\[\left\{c\to \frac{5}{9}\right\} \]c = 5/9 mph\[\text{distance} =\left(5-\frac{5}{9}\right)\frac{15}{60}=\frac{10}{9}=1.11\text{miles} \]

  3. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy