Question 1091585
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You have a five-dollar bill and a total of $11.30 in your pocket. You have 3 times as many nickels as quarters, and 14 more dimes than nickels.  How many quarters, nickels and dimes do you have?  
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That means you have $6.30 in coins.
n, nickels
q, quarters
d, dimes
{{{system(n/q=3,d=n+14,5n+10d+25q=630)}}}


{{{system(n=3q,d=n+14,n+2d+5q=126)}}}


{{{n+2(n+14)+5(n/3)=126}}}
Can you continue from here?