“The captain of a rafting boat takes his crew down river for 6 hours, covering a total of 56 miles. When he realizes he left one of his passengers behind, he is forced to paddle back upriver for 8 miles. The trip back
up took him 3 hours."
A student used the following system of equations to model the situation given above. Which of the
statements is true about the system of equations the student used?
b = the speed of the boat
r = the speed of the current
[8(6-1)=3
1618+r) = 56