Question 354556
 
Carl travels 84 miles. let carl's speed be x
Rob travels 100 miles his speed = x+8 mph
 the time they take is same
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Time = distance /speed
84/x=100/(x+8) 
84(x+8)=100x
84x+672=100x
100x-84x=672
16x=672
/16
x=672/16
x= 42 mph carls speedRob's speed = x+8 
=16+8=24 mph
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m.ananth@hotmail.ca