SOLUTION: Pam and Sue left their house at the same time and headed in opposite directions. After 4 hours, they were 440 miles apart. If Pam drove 10 mph faster than Sue, how fast did Sue dri
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Question 973898: Pam and Sue left their house at the same time and headed in opposite directions. After 4 hours, they were 440 miles apart. If Pam drove 10 mph faster than Sue, how fast did Sue drive?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Pam and Sue left their house at the same time and headed in opposite directions. After 4 hours, they were 440 miles apart. If Pam drove 10 mph faster than Sue, how fast did Sue drive?
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Sue rate:: x
Pam rate:: x+10
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Combined rate:: 2x+10
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Equation:
time*rate = distance
4 * (2x+10) = 440
8x + 40 = 440
8x = 400
x = 50 mph (Sue's rate)
x+10 = 60 mph (Pam's rate)
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Cheers,
Stan H.
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