A community for students.
Here's the question you clicked on:
 0 viewing
ValentinaT
 2 years ago
Help please? With steps?
ValentinaT
 2 years ago
Help please? With steps?

This Question is Closed

e.mccormick
 2 years ago
Best ResponseYou've already chosen the best response.1How far did you get with this?

ValentinaT
 2 years ago
Best ResponseYou've already chosen the best response.0Hold on a second please, I'm writing.

e.mccormick
 2 years ago
Best ResponseYou've already chosen the best response.1Kk. Cause I do have a path to the answer...

ValentinaT
 2 years ago
Best ResponseYou've already chosen the best response.0\[\frac{ 72 }{ 2 } + \frac{ 72 }{ x } = \frac{ 72 }{ 1.5 }?\]

e.mccormick
 2 years ago
Best ResponseYou've already chosen the best response.1hmm... I can see where you got the 72/2 and 72/1.5.... but the 72/x makes no sense to me.

ValentinaT
 2 years ago
Best ResponseYou've already chosen the best response.0Sorry, I was looking at the example in my book, and tried to model it like it.

e.mccormick
 2 years ago
Best ResponseYou've already chosen the best response.1\(c_1 cpm=\frac{72}{2}\) and \(c_2 cpm=?\) Where cpm is Copies Per Minute \(1.5(c_1 cpm+c_2 cpm)=72\)

e.mccormick
 2 years ago
Best ResponseYou've already chosen the best response.1Once you know the CPM for the old copier, you can find out how long it takes to make 72 copies.

ValentinaT
 2 years ago
Best ResponseYou've already chosen the best response.0Sorry, I was writing this down.

e.mccormick
 2 years ago
Best ResponseYou've already chosen the best response.1Your method might actually do that in one shot, don't know. You could run it both ways and see.

ValentinaT
 2 years ago
Best ResponseYou've already chosen the best response.0How do I find the cpm for the old copier? \[1.5(\frac{ 72 }{ 2 } + \frac{ 72 }{ x }) = 72\]?

e.mccormick
 2 years ago
Best ResponseYou've already chosen the best response.1You just need x. Not 72/x.

ValentinaT
 2 years ago
Best ResponseYou've already chosen the best response.0Okay. \[1.5(\frac{ 72 }{ 2 } + x) = 72\]

ValentinaT
 2 years ago
Best ResponseYou've already chosen the best response.0Can you give me a hint on what to do next?

e.mccormick
 2 years ago
Best ResponseYou've already chosen the best response.1Move the 1.5 to the other side, do the dractions. They become nice numbers.

e.mccormick
 2 years ago
Best ResponseYou've already chosen the best response.1fractions... oops. I was checking the other way. It would get a very bad number.

ValentinaT
 2 years ago
Best ResponseYou've already chosen the best response.0Okay. \[\frac{ 15 }{ 10 } (\frac{ 72 }{ 2 } + x) = 72\] End up with 12.

e.mccormick
 2 years ago
Best ResponseYou've already chosen the best response.1My version of the work:\[1.5\left(\frac{ 72 }{ 2 } + x\right) = 72 \\ \implies \frac{ 72 }{ 2 } + x = \frac{72}{1.5} \\ \implies 36 + x = 48 \\ \implies x = 4836 \\ \implies x = 12\]So 12 copies per minute. Then the time for 72 copies is \(\frac{72}{12}\)

e.mccormick
 2 years ago
Best ResponseYou've already chosen the best response.1Yah, these and riverboat problems are all about finding what is added and what is multiplied. The true goal of word problems is trying to help you figure out how math works in real life rather than just in homework.

e.mccormick
 2 years ago
Best ResponseYou've already chosen the best response.1/cheer Yep. Really slow copier.
Ask your own question
Sign UpFind more explanations on OpenStudy
Your question is ready. Sign up for free to start getting answers.
spraguer
(Moderator)
5
→ View Detailed Profile
is replying to Can someone tell me what button the professor is hitting...
23
 Teamwork 19 Teammate
 Problem Solving 19 Hero
 Engagement 19 Mad Hatter
 You have blocked this person.
 ✔ You're a fan Checking fan status...
Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.