SOLUTION: Kiran drove from City A to City B, a distance of 225 mi. She increased her speed by 14 mi/h for the 372-mi trip from City B to City C. If the total trip took 12 h, what was her spe

Algebra ->  Equations -> SOLUTION: Kiran drove from City A to City B, a distance of 225 mi. She increased her speed by 14 mi/h for the 372-mi trip from City B to City C. If the total trip took 12 h, what was her spe      Log On

Let x be the speed moving from A to B (the value under the question).


Then you have this "time" equation


 +  = 12  hours.


Solve it for x.  Your first step is to multiply all the terms by x*(x+14).