document.write( "Question 1087754: Joe and Nancy decide to take a road trip. The first 120 miles of the drive is pretty easy, while the last 84 miles of the drive is filled with curves. They drove at an average of 9 miles per hour faster for the first 120 miles of the trip. The entire trip took 3 hours. How fast were Joe and Nancy driving for the first 120 miles of the trip?
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Algebra.Com's Answer #702052 by MathTherapy(10552) $\"\"$ $\"About$

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Joe and Nancy decide to take a road trip. The first 120 miles of the drive is pretty easy, while the last 84 miles of the drive is filled with curves. They drove at an average of 9 miles per hour faster for the first 120 miles of the trip. The entire trip took 3 hours. How fast were Joe and Nancy driving for the first 120 miles of the trip?
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Let speed during the 120-mile trip be S
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document.write( "Then speed during the 84-mile trip = S – 9
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document.write( "We then get the following TIME equation: 
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document.write( "120(S – 9) + 84S = 3S(S – 9) -------- Multiplying by LCD, S(S – 9)
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document.write( "(S - 72)(S - 5) = 0
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document.write( "S - 72 = 0               OR               S - 5 = 0
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document.write( "S, or 	         OR	      S = 5 (ignore) \n" );
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