Question 1015974
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Travel time is 3 hours.
Distance is 240 miles.
Combined speed = 240 miles/3 hours = 80 mi/hr
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S=speed of slower car; F=speed of faster car=S+10mph
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F+S=80mph
(S+10mph)+S=80moh
2S=70mph
S=35mph
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ANSWER 1: Speed of the slower car is 35 mph.
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F = S + 10 mph = 35 mph + 10 mph = 45 mph
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ANSWER 2: Speed of the faster car is 45 mph.
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CHECK:
(3hrs)F+(3hrs)S=240 mi
(3hrs)(45mph)+(3hrs)(35mph)=240mi
135mi+105mi=240mi
240mi=240mi