Verified Answer :

To find the time it takes for a body to travel a certain distance given its rate, divide the distance with the rate. By letting t be the time, the expression would be,

                                                     t = d / r

From the given, 
                                             t = 315 km / (35 km/h) = 9 h

Thus, it takes 9 hours for a body to travel 315 km given that its speed is 35 km/h. 


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