If The speed of a car is decreased by
8 km/hr. it takes 1 hour more to cover a distance of 240 km.
find the originalspeed of car ?
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Step-by-step explanation:
let the speed of the car be x
distance travelled = 240 km
time taken = 240/x
if speed is reduced by 8 km/hr
Speed becomes x-8
time taken = 240/x-8
according to the question,
240/x-8 - 240/x = 1
1/x-8 - 1/x = 1/240
8/(x-8)(x) = 1/240
(x-8)(x)= 240*8
(x-8)(x)= 1920
Solving the eqn we get x= 48 km/hr
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