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A car takes 2 hours to reach a destination by travelling at the speed of 60km/h. How
long will it take when the car travels at the speed of 80 km/h
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ANSWER : Given , time = 2 hour
speed in 2 hour = 60km/h
speed in y speed = 80 km/h
by unitary method we have to find speed in one hour =60/2=30
to find time in y 80km/h ,
1/y=30/80
y = 80/30=2.6666.... h
answer is 2 hour 7 min in round off
Step-by-step explanation:
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