AI Tutor
Back to 5.3 Solve Systems of Equations by Elimination

5.3 Exercise 86

Avg difficulty 2.5

Norris can row 3 miles upstream against the current in 1 hour, the same amount of time it takes him to row 5 miles downstream, with the current. Solve the system. {r−c=3r+c=5\begin{cases} r - c = 3 \\ r + c = 5 \end{cases}

  1. ⓐ for rr, his rowing speed in still water.
  2. ⓑ Then solve for cc, the speed of the river current.

OpenStax Elementary Algebra 2e, 5.3 Solve Systems of Equations by Elimination, exercise 86

AI Tutor

Adapted from Elementary Algebra 2e © 2020 Rice University. Licensed under CC BY 4.0. Source: Elementary Algebra 2e. Imported at revision 77a933c.