SOLUTION: Gregory is 154 miles away from Donald. They are traveling towards each other. If Donald travels 8 mph faster than Gregory and they meet after 7 hours, how fast was each traveling?

Question 950475: Gregory is 154 miles away from Donald. They are traveling towards each other. If Donald travels 8 mph faster than Gregory and they meet after 7 hours, how fast was each traveling?
_Gregory is traveling mph?
_Donald is traveling mph?
Answer by macston(5194) (Show Source): You can put this solution on YOUR website!
154 mi/7hrs=22 mph Their combined speed is 22 mph.
D=Donald's speed; G=Gregory's speed=D-8mph
D+G=22 mph Substitute for G.
D+(D-8mph)=22mph Add 8 mph to each side.
2D=30 mph Divide each side by 2.
D=15 mph ANSWER 1: Donald's speed is 15 mph
G=D-8mph=15mph-8mph=7 mph ANSWER 2: Gregory' speed was 7 mph.
CHECK
In 7 hours their combined total was 154 mi
15 mph(7 hrs)+ 7 mph(7 hrs)=154 mi
105 mi + 49 mi=154 mi
154 mi=154 mi

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