Question 128406
Both trips were the same distance
Call the distance to the service station {{{d}}}km
{{{d = r*t}}} and
{{{d/r = t}}}
{{{d/60 + d/15 = 4}}}
multiply both sides by 60
{{{d + 4d = 4*60}}}
{{{5d = 240}}}
{{{d = 48}}}km
The round trip = {{{2d}}}
The round trip was 96 km answer