. A car travelled certain distance in four
hours with a speed of 45 kms/hour.
Another car travelled the same distance
in 3 hours. Then the speed of the car is
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Answer :
speed of 1 car =45 km/hr
time taken by 1 car =4 hr
speed of 2 car =?
time taken by 2 car =3
x/3/10+x/3/20+x/3/60=x/30+x/60+x/180
6x+3x+x/180=10x/180
average speed of car = total distance cavered /total time
=x/x/18 =18
the speed of the 2 car =18km/hr
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