Question 459968
A car is driving from point A to point B at 50mph and from point B to point A at 60mph.
 The whole trip took 11 hrs. How mach distance was driven in that time... 
:
Let d = the one-way distance
:
Write a time equation: Time = dist/speed
:
A-B time + B-A time = 11 hrs
{{{d/50}}} + {{{d/60}}} = 11
multiply by 300
300*{{{d/50}}} + 300*{{{d/60}}} = 300(11)
Cancel the denominators, resulting in:
6d + 5d = 3300
d = {{{3300/11}}}
d = 300 mi is the one-way dist
:
Total dist: 2(300) = 600 driven in 11 hrs