A car travels at a speed of 57 km/h for three hours. If the long Journey of 321 km is to be completed in another 5/2 hours, at what speed must the car travel in order to complete journey in time?
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Answer:
Distance=Speed×Time
When speed is 40 kmph
Distance traveled by car =40×9
=360 km
When speed is 60 kmph
Time taken to complete the journey =
60
360
=6 hours
Step-by-step explanation:
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