Rate-Time-Distance Problem 3

Videos by Julie Harland http://yourmathgal.com
Solves this word problem using uniform motion rt=d formula: A 555-mile, 5-hour trip on the Autobahn was driven at two speeds. The average speed of the car was 105 mph on the first part of the trip, and the average speed was 115 mph for the second part. How long did the car drive at each speed? Answer: 105 mph for 2 hours and 115 mph for 3 hours

Category:

Education

Tags:

• yourmathgal
• math
• algebra
• Harland
• rate
• time
• distance
• word
• problems
• uniform
• motion

[SantinaJohnson1]

I'm scratching my head, where did 575 come from?

[videosbyjulieharland]

@SantinaJohnson1: Let me know where exactly (in minutes and seconds) you see 575 so I can see what you are referring to.

[steffi151990]

@SantinaJohnson1 @SantinaJohnson1 115(5-x) = 575-115x

[steffi151990]

@SantinaJohnson1 115(5-x) = 575-115x

[h20bubblez]

@Asianboi808s how?

[Asianboi808s]

you could do it a different way which is way faster

[eskand5]

thanks mr.convery



[BallHawk711]

Thank You!!

[tamoniva12]

Excellent

[HelloStevenful]

You make it so simple. Thank you very much!