Problema Solution
How far upstream can you canoe at 8 mph and still return downstream at 12 mob in a total time of 4 hours?
Answer provided by our tutors
let
t1 = the time of the upstream travel
t2 = the time of the downstream travel
since distance = speed*time we have
8*t1 = 12*t2 divide both sides by 4
2t1 = 3t2
the total time is 4 hours
t1 + t2 = 4
by solving the system of equations
2t1 = 3t2
t1 + t2 = 4
we find
t1 = 2.4 h
t2 = 1.6 h
click here to see the step by step solution of the system of equations
2.4*8 = 19.2 mi
you can canoe 19.2 miles upstream.