Problema Solution
How bad is the heavy traffic? You can
walkwalk
66
miles in the same time that it takes to travel
88
miles by car. If the car's rate is
11
milemile
per hour faster than your
walkingwalking
rate, find the average rate of each.
Answer provided by our tutors
Let
v = the average walking rate
v + 11 = the average car's rate
d1 = 66 mi the distance walked
d2 = 88 mi the distance traveled by car
Since speed = distance/time follows time = distance/speed:
d1/v = d2/(v + 11)
66/v = 88/(v + 11)
........
click here to see the equation solved for v
........
v = 33 mph
v + 11 = 33 + 11 = 44 mph
The average walking rate is 33 mph.
The average driving rate is 44 mph.