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mramirez686
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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
 one year ago
mramirez686 Group Title
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
 one year ago

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

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

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

mramirez686 Group TitleBest ResponseYou've already chosen the best response.0
Yes, I see that
 one year ago

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

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

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

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

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

mramirez686 Group TitleBest ResponseYou've already chosen the best response.0
I 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.
 one year ago

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

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

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

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