SOLUTION: A car takes 2 hours to travel a certain distance between two cities. If the speed of travel diminishes by 20km per hour, it will add 30 minutes of travel time. What is the distan
Algebra.Com
Question 855084: A car takes 2 hours to travel a certain distance between two cities. If the speed of travel diminishes by 20km per hour, it will add 30 minutes of travel time. What is the distance between the two cities.
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
r*2=d
(r-20)(2.5)=2r
2.5r-50=2r
.5r=50
r=100
d=80*2.5=200
d=2*100=200
RELATED QUESTIONS
A car takes 2 hours to travel between two cities. If the average speed decreases 20km/hr (answered by stanbon)
a driver averaged 52 miles per hour and took 9 hours to travel between two cities. What... (answered by checkley77)
A driver averaged 49 miles per hour and took 6 hours to travel between two cities. What... (answered by jorel1380)
a driver averaged 44 miles per hour and took 11 hours to travel between two cities. What... (answered by richwmiller)
A driver averaged 51 miles per hour and took 11 hours to travel between two cities. What... (answered by rfer)
a driver averaged 44 miles per hour and took 5 hours to travel between two cities. what... (answered by stanbon)
A driver averaged 48 miles per hour and took 14 hours to travel between two cities. What... (answered by ewatrrr)
A driver averaged 58 miles per hour and took 10 hours to travel between two cities. what... (answered by Alan3354)
A driver averaged 47 miles per hour and took 8 hours to travel between two cities. What... (answered by rfer)