SOLUTION: Two friends decide to meet in Chicago to attend a Cubs baseball game. Rob travels 174miles in the same time that Carl travels 156miles Rob's trip uses more interstate highways and
Algebra.Com
Question 763467: Two friends decide to meet in Chicago to attend a Cubs baseball game. Rob travels 174miles in the same time that Carl travels 156miles Rob's trip uses more interstate highways and he can average 6 mph more than Carl. What is Rob's average speed?
Answer by Cromlix(4381) (Show Source): You can put this solution on YOUR website!
Carl's speed = x
Rob's speed = x + 6
Carl's time = 156 miles/x
Rob's time = 174/x + 6
As the time were the same
we can say:-
156/x = 174/x + 6
Cross multiply
174(x) = 156(x + 6)
174x = 156x + 936
174x - 156x = 936
18x = 936
x = 936/18
x = 52 mph
Carl's speed = 52 mph
Rob's speed = 58 mph
Proof:
156/52 = 3hrs
174/58 = 3hrs
Hope this helps.
:-)
RELATED QUESTIONS
Two friends decide to meet in Chicago to attend a cubs game. Rob travels 96 miles in the (answered by stanbon)
Two friends decide to meet in Chicago to attend a white sox game. Rob travels 100 miles... (answered by mananth)
Hello,
Please help with this word problem and show steps on how you recieved... (answered by checkley71)
Translate the problem into a pair of linear equations in two variables. Solve the... (answered by mananth)
translate the problem into a pair of linear equations in two variables. solve the... (answered by stanbon)
bob leaves home in Chicago at 9a.m. and travels east at a steady 60 mph.
Susan, 400... (answered by josgarithmetic,josmiceli)
Derrek Lee of the Chicago Cubs had the highest batting average in the 2005 MLB season.... (answered by greenestamps)
Chuck and Dana agree to meet in Chicago for the weekend. Chuck travels 147 miles in the... (answered by mananth)
Solve the problem. Chuck and Dana agree to meet in Chicago for the weekend. Chuck travels (answered by ankor@dixie-net.com)