Question

A car takes 10 hours to cover a certain distance at a uniform speed. If the speed has
heen 18km more per hour, it would have taken 7 hours to cover the same distance in
kilometres. Find the distance.
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Answer 1

Answer:

x=distance, y=speed

x/10=y,.x = loy, x-10y=0....(I)

x/7=y +8, x-7y=126...........(2)

(i)-(2)->y=42

x = loy=42xlo=420 km

distance =420 Km