Distance and Rate Algebra Problem

Distance and Rate Algebra Problem

15:38 04 December in Old Posts

A 150 mile trip is driven at R miles per hour. The same trip would take 2 hours less if you increase the speed by 20 mph. What is R? I have tried R=150/t
R=150/t-2 (150/t+2=150/t-2).t(t-1)= 150t-150t+2t2-2t= t2-t-150=0 = (t+2)(t+75)and that is as far as I get because I know that that is not right.

If increased by 20 the speed will be x+20
Subtract the increase speed by the normal speed respect to the distance = time.


Simplfy that and you get 2 solutions:

x=-50 and x=30

Remove the negative

Hence, the normal speed (R) is 30mph

If you need someone to take your online algebra class or help you with your class please contact us for a quote. Thank you!

Kelly Reynolds-Seraphin


Hi, I am No Need To Study's writing department head and I also wear the hat of team leader for customer support @NoNeedToStudy. I like puppies, rainbows and I sort of am a computer whiz so I help with computer courses and classes too. I write blogs at times about interesting trends and developments in the MOOC space. My claim to fame? I wrote some of the first lines of code that ended up being what VK.com is now. (Un)Official New York Soul Cycle and Flybarre ambassador.

No Comments

Sorry, the comment form is closed at this time.