Question 1006810
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T=Tricia's speed; J=Janine's speed=T-20 mph
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310mi/2.5hr=124 mph
The combined speed of both is 124 mph
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T+J=124 mph
T+T-20mph=124 mph
2T=144 mph
T=72 mph
ANSWER 1: Tricia's speed was 72 miles per hour.
J=T-20 mph=72 mph - 20 mph=52 mph
ANSWER 2: Janine's speed was 52 miles per hour.
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CHECK:
2.5hr(J)+2.5hr(T)=310 mi
2.5hr(52 mph)+2.5 hr(72 mph)=310 mi
130 mi+180 mi=310 mi
310 mi=310 mi