A car with speed 60 km/hr takes 8 hours to travel some distance. What should be the increase in the speed if the same distance is to be covered in 7hours 30 minutes hours ?
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Answer:
4 km/hr
Step-by-step explanation:
We multiply 60 by 8 to get
480 km/hr in 8 hours.
We must increase the speed per hour by 4 km/hr to travel this same distance but in 30 minutes less.
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