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A correspondent rides a motorcycle to deliver the documents within the prescribed time. His speed is 36 kilometers per hour. As a result, he arrives 20 minutes earlier. If he is 30 kilometers per hour, he is 12 minutes late? What's the distance?
Suppose the specified time is x hours, according to the meaning of the question: 36 (X-13) = 30 (x + 15), the solution is: x = 3 36 × (3-13) = 36 × 83 = 96 km a: the specified time is 3 hours, and the distance is 96 km
A correspondent rides a motorcycle to deliver the documents within the prescribed time. His speed is 36 kilometers per hour. As a result, he arrives 20 minutes earlier. If he is 30 kilometers per hour, he is 12 minutes late? What's the distance?
Suppose the specified time is x hours, according to the meaning of the question: 36 (X-13) = 30 (x + 15), the solution is: x = 3 36 × (3-13) = 36 × 83 = 96 km a: the specified time is 3 hours, and the distance is 96 km
A correspondent needs to send the documents to a certain place within the specified time by motorcycle. If he travels 60 kilometers per hour, he will arrive 12 minutes earlier. If he travels 50 kilometers per hour, he will arrive 12 minutes earlier
How many kilometers is the distance?
Equation!
Set the specified time as X hours
60(X-1/5)=50(X 7/60)
The solution is 107 / 60
The distance is 60 (107 / 60-1 / 5) = 95 km
A correspondent rides a motorcycle to deliver the document to a certain place within the specified time. If he walks 60 kilometers per hour, he will arrive 12 minutes earlier. If he walks 50 kilometers per hour, he will be 7 minutes late. How many kilometers is the distance?
I walked for X hours
(x-0.2)*60=(x+7/60)*50
60x-12=50x+35/6
10x=25/6
x=0.625
(0.625-0.2)*60=25.5
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