Question 987783
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S=speed of slower train; F=speed of faster train=S+10mph
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205mi/2.5hrs=82 mph The sum of the speeds is 82mph
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S+F=82mph
S+S+10mph=82mph
2S=72mph
S=36mph ANSWER 1: The speed of the slower train is 36 mph.
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F=S+10mph=36mph+10mph=46mph ANSWER 2: The speed of the faster train is 46 mph.
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CHECK:
2.5hrs(F)+2.5hrs(S)=205mi
2.5hrs(46mph)+2.5hrs(36mph)=205mi
115mi+90mi=205mi
205mi=205mi