Question 887283
A cyclist covers a distance of x km at 60 km/h. Her return journey at 12 km/h takes 80 minutes longer. Determine the distance
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let x=distance
travel time=distance/speed
{{{x/12-x/60=80 min}}}
{{{x/12-x/60=(4/3) hr}}}
lcd:60
{{{5x-x=80}}}
4x=80
x=20
distance=20 km