A purse contains $4.70 in nickels and quarters. There are 30 coins in total. how many nickels and quarters are there?

Question

texaschic101 · Answer

n + q = 30
.05n + .25q = 4.70

now it can be solved by substitution. Can you do it now ?

anonymous · Answer

Yes, thanks for the help.

texaschic101 · Answer

do you have any questions about the equations ?

anonymous · Answer

Yes, since there are 2 variables what do I do to actually get the answer?

texaschic101 · Answer

substitution..
n + q = 30....n = 30 - q
so sub in 30 - q for n back into the second equation. This will allow you to solve for q. You can then sub that answer back into the first equation and solve for n

anonymous · Answer

oh, okay. Thanks.

texaschic101 · Answer

sure thing :)