document.write( "Question 388122: Bill has 10 coins, all of which are dimes and quarters. If his dimes were quarters and his quarters were dimes, his coins would total 30 cents more. How many quarters does Bill have? \n" ); document.write( "

Algebra.Com's Answer #274435 by stanbon(75887) $\"\"$ $\"About$

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Bill has 10 coins, all of which are dimes and quarters.
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\n" ); document.write( "If his dimes were quarters and his quarters were dimes, his coins would total 30 cents more.
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\n" ); document.write( "How many quarters does Bill have?
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\n" ); document.write( "Equations:
\n" ); document.write( "Quantity: d + q = 10
\n" ); document.write( "10q+25d -(10d+25q) = 30
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\n" ); document.write( "Modify:
\n" ); document.write( "d + q = 10
\n" ); document.write( "15d -15q = 30
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\n" ); document.write( "Modify:
\n" ); document.write( "d + q = 10
\n" ); document.write( "d - q = 2
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\n" ); document.write( "Subtract:
\n" ); document.write( "2q = 8
\n" ); document.write( "q = 4 (# of quarters)
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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