SOLUTION: Please help me with this word problem: A change jar contains nickels, dimes and quarters, totaling an amount of $1.90. The amount of nickels is one more than twice the number of di

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Question 1048087: Please help me with this word problem: A change jar contains nickels, dimes and quarters, totaling an amount of $1.90. The amount of nickels is one more than twice the number of dimes. The number of quarters is one half the total number of nickels and dimes. Find the number of each coinmin the change jar.
Answer by josgarithmetic(39625) About Me  (Show Source):
You can put this solution on YOUR website!
system%280.05n%2B0.1d%2B0.25q=1.90%2Cn=1%2B2d%2Cq=%281%2F2%29%28n%2Bd%29%29

system%28n%2B2d%2B5q=38%2Cn=2d%2B1%2C2q=n%2Bd%29

system%28n%2B2d%2B5q=38%2Cn-2d=1%2Cn%2Bd-2q=0%29
A few matrix row reduction operations on this could be a good way to go.