Posted by **Ellie** on Thursday, March 28, 2013 at 11:28pm.

a copy machine makes c copies in m minutes according to the equation c=60m. what is the unit rate of copies per minute?

I think it is m but not sure, can you help me understand how to figure out this equation. Please help!

Thanks

- math- please help -
**Steve**, Friday, March 29, 2013 at 12:03am
c=60m

c/m = 60

they have told you that c=60m, so that for every minute, you get 60 copies.

- math- please help -
**Ellie**, Friday, March 29, 2013 at 9:56am
This helped alittle but the answers were multiple choice

a. c

B. 60

C. m

D .m/c

That is why I thought the best answer was c. = m

Is this correct?

- math- please help -
**Steve**, Friday, March 29, 2013 at 12:18pm
why not (B)?

- math- please help -
**Ellie**, Friday, March 29, 2013 at 12:26pm
How do you figure this out? I don't know how to do it? Can you please explain how you would get b? Did you just divide each side by m?

Thank you for your help

- math- please help -
**Steve**, Friday, March 29, 2013 at 2:10pm
Basically, that is just what you do.

we are told that c=60m

that is, using the units,

copies = 60 * minutes

now divide by minutes because you want the rate (copies/minute)

copies/minutes = 60

also, you can think of it like this

c=60m

now, what happens if you take 1 more minute?

60(m+1) = 60m+60

That is, during the next minute you get 60 more copies.

- math- please help -
**Ellie**, Friday, March 29, 2013 at 3:16pm
Thank you so much for your help.

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