SOLUTION: wilma drove at an average speed of 50 miles per hour in city a to visit her sister in city b. she stayed in city b 25 hours, and on the trip back averaged 55 mph. she returned hom

Question 346372: wilma drove at an average speed of 50 miles per hour in city a to visit her sister in city b. she stayed in city b 25 hours, and on the trip back averaged 55 mph. she returned home 47 hours after she left. how many miles is city a from city b.
1. In terms of , express Wilma's driving time from A to B
It is :50 mph
2. In terms of , her return driving time is: 55mph
3. Her TOTAL driving time is: 22 hours
So answer from 1. PLUS 2. set equal to 3. is the equation:
= x/50+x/55=22
4. which is the equation we must use to solve for x Your answer for x is : ???
question 4 is the only part I need help on.
Answer by scott8148(6628) (Show Source): You can put this solution on YOUR website!
multiply by the LCD (550) ; add the x-terms ; divide to find x
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