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Question 1147867: Kylee has $0.80 in nickels and dimes. She has four more nickels than dimes. How many of each coin does she have?
I just need help on getting the equations right. From there on, I can figure out whether to use substitution or elimination and do the work.
Found 2 solutions by ankor@dixie-net.com, MathTherapy:
Answer by ankor@dixie-net.com(22740)   (Show Source):
You can put this solution on YOUR website! Kylee has $0.80 in nickels and dimes.
.05n + .10d = .80
She has four more nickels than dimes.
d = n + 4
How many of each coin does she have?
;
in the 1st equation replace d with (n+4)
solve for n
Answer by MathTherapy(10552)  (Show Source):
You can put this solution on YOUR website!
Kylee has $0.80 in nickels and dimes. She has four more nickels than dimes. How many of each coin does she have?
I just need help on getting the equations right. From there on, I can figure out whether to use substitution or elimination and do the work.
One of the other person's equations is WRONG!
Correct equations: N = D + 4, or N - D = 4, or D = N - 4 ------ eq (i)
.05N + .1D = .8 ------ eq (ii)
Substitute N - 4 for D in eq (ii) to get value of N, or the number of nickels
Substitute the value of N into eq (i), which is the EASIER one, to get the value of D, or the number of dimes.
Last 2 lines could be omitted since you claim that you know how to solve the equations, and only need the setup.
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