a car can finish a journey in 10 hours at the speed of 48km per hour. by how much should its speed be increased so that it takes 8 hrs to cover the same distance
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And, Speed (v) = 48 km/h
So, total distance (d) = v × t
(d) = 48 × 10
(d) = 480 km.
Now, if the car covers this distance in d=8 hours then the speed=>
v = d/t
v = 480/8
v = 60 km/h.......ans.
So, the car's speed should be increased 12km/h more to 60km/h so that it takes 8 hours to cover this distance.
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