Problema Solution
Tim left the city traveling at 51 mph, while, at the same time, Sara
left the city going the opposite direction at a speed of 45 mph. Find the
time Tim traveled before the two were 168 miles apart.
Answer provided by our tutors
Let
v1 = 51 mph the speed of Time
v2 = 45 mph the speed of Sara
d = 168 mi the distance
t = the time of the travel
Since distance = speed*time we have:
v1t + v2t = 168
51t + 45t = 168
........
........
t = 1.75 h
t = 1 hr 0.75*60 min
t = 1 hr 45 min
Time traveled 1 hr 45 min before the two were 168 mi apart.