# Algebra

Tricia and janine are roommates and leave Houston on Interstate 10 at the same time to visit their families for a long weekend. Tricia travels west and Janine travels east. If Tricia's average speed is 12 mph faster than Janine's, find the speed of each if they are 320miles apart in 20 hours and 30 minutes.

1. 👍 0
2. 👎 0
3. 👁 72
1. Janine's speed --- x
Tricia's speed --- x+12

Janince's distance = 20.5(x)
Tricia's distance = 20.5(x+12)

20.5x + 20.5(x+12) = 320
41x + 246 = 320
41x = 74
x = 1.8

So Janine went at 1.8 mph and Tricia went at 13.8 mph ??????

The answers do check out mathematically but don't make a lot of sense.

1. 👍 0
2. 👎 0
posted by Reiny

## Similar Questions

1. ### Math(Algebra)

Janine has started an exercise program. As part of her exercise program, she will walk along trails. Janine walks at an average speed of 1 mile in 15 minutes. What is Janine’s average speed in miles per hour? Show or explain how

1. Why do many boys like to read stories about Davy Crockett? 2. Who were some of the famous people from Virginia? 3. Why did Sam Houston like to live with the Native Americans? 4. How did Sam Houston help his Indian friends? 5.

asked by Anonymous on March 30, 2010
3. ### math

explain the error Janine tells her friend that ordered pairs have an x coordinate of 0 lie on the x axis. She uses the origin as an example. Describe Janine's error. Use a counterexample to explain why Janine statement is false.

asked by camryn on January 29, 2015
4. ### math

explain the error Janine tells her friend that ordered pairs have an x coordinate of 0 lie on the x axis. She uses the origin as an example. Describe Janine's error. Use a counterexample to explain why Janine statement is false.

asked by camryn on January 28, 2015
5. ### Math

Explain the Error Janine tells her friend that ordered pairs that have an x-cordinate of 0 lie on the x-axis.She uses the origin as an example.Describe Janine's error.Use a counter example to explain why Janine's statement is

asked by Esdras on September 7, 2016
6. ### Acc. Algebra 2

At 10:30 am two planes leave to Houston, one flying east 560km/h and the other flying west at 640 km/h. At what time will they both ne 2100km apart.

asked by Lisa on September 3, 2013
7. ### Samples and Predictions Math

Help please I really don't understand this! 1)Janine wishes to conduct a poll to predict how many students will vote for her for class president. Which polling methods are likely to be biased? Choose all answers that are correct.

asked by Rochelle on June 1, 2016
8. ### physics

You drive on an interstae 10 from San Antonio to Huston, half the [b]time[/b] at 55km/h and the other half at 90km/h. On the way back you travel half the [b]distance[/b] at 55km/h and the other half at 90km/h. What is your average

asked by ben on September 10, 2006
9. ### Economics

Pat and Kris are roommates. They spend most of their time studying, but they leave some time for their favorite activities: making pizza and brewing root beer. Pat takes 4 hours to brew a gallon of root beer and 2 hours to make a

asked by Aubrey on February 11, 2007
10. ### MSD

Pat and Kris are roommates. They spend most of their time studying (of course), but they leave some time for their favorite activities: making pizza and brewing root beer. Pat takes 4 hours to brew a gallon of root beer and 2