Moving at the rate of 70 km/hr, a car completes a journey in 18 mins. How long would it take to complete this journey,if the speed is increased to 84 km/hr?
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Answer:
Step-by-step explanation:
D = speed x time
=70km/h x 18/60h
=21km
Again,
Time= Distance/speed
=21km/84km/h
=1/4hr or 15minute
it will take 15 minutes to complete its journey
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