Question 566561
emily and Camille started from the same city and drove in opposite directions on the freeway. After 3 hours they were 354 miles apart. 
Let e be Emily's rate; let c be Camille's rate
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distance + distance = 354 miles
3e + 3c = 354
e + c = 118
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If they had gone in the same direction, Emily would have been 18 miles ahead of Camille. How fast did each woman drive?
3e - 3c = 18
e - c = 6
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Two equations:
e + c = 118
e - c = 6
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Add and solve for "e":
2e = 124
e = 62 mph (Emily's rate)
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Solve for "c":
e + c = 118
62 + c = 118
c = 56 mph (Camille"s rate)
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Cheers,
Stan H.
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