Problema Solution
David drove 871 miles in 13 hours.
At the same rate, how long would it take him to drive 737 miles?
Answer provided by our tutors
let
d1 = 871 mi
t1 = 13 hr
d2 = 737 mi
t2 = the time David needed to drive distance of d2 = 737 mi
v = the average rate of David
since v = d/t we have:
v = d1/t1
v = 871/13
v = 67 mph
from v = d/t follows t = d/v
t2 = d2/v
t2 = 737/67
t2 = 11 hr
David will drive the 737 miles in 11 hours.