if a car increases it's speed by 10 km/hr then it takes 36 minutes less to cover a distance of 72 km. find the original speed of the car
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0
Answer:
OriNew time = `(72)/(x + 10)"hr". ` Difference in time = 36 mins. ∴ Original speed = 30km/hr.
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4
Given:
Let the original speed of the car =x km/hrs.
Time taken by it to cover 72km=72/x m
New speed of the car = (x+10)km /hrs.
New time taken by the car to cover 72km=72/x+10 hrs.
As per the given condition, time is reduced by 36 minutes
x=-40 not acceptable
Hence the original speed of the car is 30 km/hrs.
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