Let S1 = speed of first car and S2 = speed of the second car = S1 + 15
Then S1(3) + S2(3) = 375 = 3S1 + 3(S1 + 15) = 3S1 + 3S1 + 45 = 6S1 + 45 = 375
Therefore, S1 = 55 mph S2 = S1 + 15 = 70 mph
DB L.
asked • 02/13/19linear equation
Two cars leave town at the same time and travel in opposite directions. The average rate of speed of one car is 15 miles per hour faster than the average rate of speed of the other car. The cars are 375 miles apart after three hours. Find the average rate of speed of the two cars.
Follow
•
1
Add comment
More
Report
1 Expert Answer
Still looking for help? Get the right answer, fast.
Ask a question for free
Get a free answer to a quick problem.
Most questions answered within 4 hours.
OR
Find an Online Tutor Now
Choose an expert and meet online. No packages or subscriptions, pay only for the time you need.
