Problema Solution
A is 60 miles from B. An automobile at A starts for B at the rate of 20 miles an hour at the same time that an automobile at B starts for A at the rate of 25 miles an hour. How long will it be before the automobiles meet?
Answer provided by our tutors
let
v1 = 20 mph the rate of the car going from A to B
v2 = 25 mph the rate of the car going from B to A
d = 60 mi the distance between A and B
t = the time of the travel
v1*t + v2*t = d
20t + 25t = 60
by solving we find:
t = 4/3 hr
t = 1 1/3 hr
t = 1 hr 60(1/3) min
t = 1 hr 20 min
click here to see the step by step solution of the equation:
the automobiles will meet in 1 hour and 20 minutes.