Answer :
Let x be the rate per hour for Brown;
Then 2x is the rate per hour for Jones;
We have the equation: 375 = 5 * ( 2x ) + 5 * x ;
=> 375 = 10x + 5x;
=> 375 = 15x;
=> x = 375 ÷15;
=> x = 25mph ;
=> 2x = 50mph.
Then 2x is the rate per hour for Jones;
We have the equation: 375 = 5 * ( 2x ) + 5 * x ;
=> 375 = 10x + 5x;
=> 375 = 15x;
=> x = 375 ÷15;
=> x = 25mph ;
=> 2x = 50mph.