View the step-by-step solution to:

Question

(rate)(time)=Distance or RT=D. There for T =D/R. The time for both trips is the same so D1/R1=D2/R2. Let C =rate

of current. We can let R1 = downstream which is 15mph for the boat+C for the current or 15+C. R2 is upstream so its rate is 15-C. The downstream distance, D1 is 12 miles, and the upstream distance D2 is 9miles. Substitute these values in the ratio above and solve for C. Leave answer in fraction form.

Recently Asked Questions

Why Join Course Hero?

Course Hero has all the homework and study help you need to succeed! We’ve got course-specific notes, study guides, and practice tests along with expert tutors.

-

Educational Resources
  • -

    Study Documents

    Find the best study resources around, tagged to your specific courses. Share your own to gain free Course Hero access.

    Browse Documents
  • -

    Question & Answers

    Get one-on-one homework help from our expert tutors—available online 24/7. Ask your own questions or browse existing Q&A threads. Satisfaction guaranteed!

    Ask a Question