college algebra
posted by Maggie .
Kiran drove from City A to City B, a distance of 242 mi. She increased her speed by 10 mi/h for the 351mi trip from City B to City C. If the total trip took 12 h, what was her speed from City A to City B?

since time = distance/speed, If she started out with speed x, then
242/x + 351/(x+10) = 12
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