SOLUTION: A man made a motor trip of 220 mile in 5 hours. Part of the time he averaged 30 mph and part of the time he averaged 50 mph. How many hours did he travel at each rate
Algebra.Com
Question 25175: A man made a motor trip of 220 mile in 5 hours. Part of the time he averaged 30 mph and part of the time he averaged 50 mph. How many hours did he travel at each rate
Answer by Paul(988) (Show Source): You can put this solution on YOUR website!
Total duration ar 30mph = 30(5-x)
Total duration at 50mph = 50x
50x+30(5-x)=220
50x-30x+150=220
20x=70
x=3.5
Total duration at 50mph = 50(5-x)
Total duration at 30mph = 30x
30x+50(5-x)=220
30x+250-50x=220
-20x=-30
x=1.5
Hence for 30mph the duration was for 3.5h and for 50mph the duration was for about 1.5h
Paul.
RELATED QUESTIONS
On a given 530 mile trip an SUV averaged 65mph during the first part and 35 mph during... (answered by TimothyLamb)
On the first part of a 317 mile trip, a salesperson averaged 58mph. He averaged only... (answered by mananth)
Trais made a business trip of 234 miles. He averaged 54 mph for the first part of the... (answered by ankor@dixie-net.com)
Travis made a business trip of 128 miles. He averaged 56 mph for the first part of the... (answered by TimothyLamb)
Travis made a business trip of 198 miles. He averaged 52 mph for the first part of the... (answered by checkley77)
Mark made a business trip of
247.5 miles. He averaged
51 mph for the first part of... (answered by ankor@dixie-net.com)
Travis made a business trip of 198 miles. He averaged 63 mph for the first part of the... (answered by fractalier)
Travis made a business trip of 234.5 miles. He averaged 53 mph for the first part of the (answered by ankor@dixie-net.com)
Steve made a business trip of 318 miles. He averaged 54 mph for the first part of the... (answered by josmiceli)