c) A vehicle with the speed 60 km/hr takes 8 hours to travel some
distance. What should be the increase in the speed, if the same
distance is covered in 7 Hours?
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Answer:
D=s x t
=60 x 8= 480km
Increase in speed:
s=d/t
s=480/7
s=68.5km/hr
increase=
68.5-60= 8.5
therefore, the increase should be increased by 8.5 km/hr
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