SOLUTION: A box contains $2 in nickels, dimes, and quarters. There are 19 coins in all, and there are twice as many nickels as dimes. How many coins of each kind are there? I need a three

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Question 964167: A box contains $2 in nickels, dimes, and quarters. There are 19 coins in all, and there are twice as many nickels as dimes. How many coins of each kind are there?
I need a three linear equation in three variables for this problem.
Answer by josgarithmetic(39630) About Me  (Show Source):
You can put this solution on YOUR website!
system%28n%2Bd%2Bq=19%2C0.05n%2B0.1d%2B0.25q=2.00%2Cn%2Fd=2%29

Simplify the second, moneycount equation so it uses whole numbers coefficients, and then use n=2d to eliminate n. You will have two equations in two unknowns...