please help me do #12. and please show work if you would so that I can learn it, thanks

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please help me do #12. and please show work if you would so that I can learn it, thanks

Mathematics
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At vero eos et accusamus et iusto odio dignissimos ducimus qui blanditiis praesentium voluptatum deleniti atque corrupti quos dolores et quas molestias excepturi sint occaecati cupiditate non provident, similique sunt in culpa qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio cumque nihil impedit quo minus id quod maxime placeat facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.

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First I need to know, What is the value of 1 nickel and 1 dime ?
Let no. of nickels=n Let no. of dimes=d n-d=4 ....................Eqn(1) (value of 1nickel)*n + (value of 1 dime)*d = $2.45 ..........Eqn(2)
great, what next?
Substitute eqn 1 in eqn 2
Yikes, can you show me what that looks like
(value of 1nickel)*n + (value of 1 dime)*(n-4)= $2.45
You will get an eqn in one variable, n
im sorry im not following, I don't know what to do with all of the information
what are my equations?
or what is n and what is d?
Let no. of nickels=n Let no. of dimes=d
ok
Given in problem, n-d=4 ....................Eqn(1)
Given in problem, The value of all the coins together=$2.45
right
Value of all the nickels in bank=(Value of 1 nickel) * n =($0.05)*n Value of all the dimes in bank=(Value of 1 dime) * d =($0.10)*d The value of all the coins=($0.05)*n + ($0.10)*d which is equal to $2.45
So, the second equation ($0.05)*n + ($0.10)*d=$2.45 .................eqn(2)
so how many nickels and dimes? once you show me this part i will understand how to do the whole problem
please show me the two equations working together
isn't it four more nickels than dimes, isn't that d+4=2.45
i mean d + n=4 ?
i don't know
Let the no. of nickels be x. Let the no. of dimes be y. four more nickels than dimes mean no of dimes(y)+4=no of nickels(x) Cn u just tel me the value of 1 nickel and dime?

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