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 one year ago
90 coins in a jar of quarters and nickels. There is a total of $15.10, how many nickels and how many quarters are in the jar?
so far, I have the 2X2 linear system set up as so:
15.10 = .05n + .25q
90 = .05n + .25q
is this correct? and how should I solve it, substitution or elimination?
Thanks!
 one year ago
90 coins in a jar of quarters and nickels. There is a total of $15.10, how many nickels and how many quarters are in the jar? so far, I have the 2X2 linear system set up as so: 15.10 = .05n + .25q 90 = .05n + .25q is this correct? and how should I solve it, substitution or elimination? Thanks!

This Question is Closed

JayDS
 one year ago
Best ResponseYou've already chosen the best response.2seems correct but not correct to me.

JayDS
 one year ago
Best ResponseYou've already chosen the best response.2there's something wrong about it.

JayDS
 one year ago
Best ResponseYou've already chosen the best response.2because u can't solve it like that, u see the coefficients are the same in front of n and q? that makes it unsolvable.

mramirez686
 one year ago
Best ResponseYou've already chosen the best response.0which explains why I keep running in circles

JayDS
 one year ago
Best ResponseYou've already chosen the best response.2lol. sorry, I haven't done these type of questions in ages..

mramirez686
 one year ago
Best ResponseYou've already chosen the best response.0that's fine, at least I have a hint on a different direction. Thank you

JayDS
 one year ago
Best ResponseYou've already chosen the best response.2your welcome, let me see if I can ask others to help u.

mramirez686
 one year ago
Best ResponseYou've already chosen the best response.0perhaps?: 15.10 = .05n + .25q 90 = n + q since amount of quarters and nickels would be whole numbers, but money would be decimal

mramirez686
 one year ago
Best ResponseYou've already chosen the best response.0I believe that's it! There are 37 nickels and 53 quarters. Thanks for the nudge in the right direction. Sometimes it's the little things that help.

JayDS
 one year ago
Best ResponseYou've already chosen the best response.2yeh, that's what I thought but I wasn't too sure but it should work, yeh it looks right to me.

JayDS
 one year ago
Best ResponseYou've already chosen the best response.2at least I somehow helped lol.

mramirez686
 one year ago
Best ResponseYou've already chosen the best response.0haha, yeah, you have to know what you are doing wrong to fix it.

JayDS
 one year ago
Best ResponseYou've already chosen the best response.2but u also have to be the smart one to know where to fix it.
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