document.write( "Question 1115959: On Monday, Harold picked up 6 donuts and two large coffees for the office staff.He paid $5.10 On Tuesday, Melinda picked up five donuts and three large coffees for the office staff. She paid $5.49 What is the cost of one donut? What is the cost of one large coffee?
\n" ); document.write( "The cost of one donut is $
\n" ); document.write( "The cost of one large coffee is $ \n" ); document.write( "

Algebra.Com's Answer #730789 by stanbon(75887) $\"\"$ $\"About$

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On Monday, Harold picked up 6 donuts and two large coffees for the office staff.He paid $5.10 On Tuesday, Melinda picked up five donuts and three large coffees for the office staff. She paid $5.49
\n" ); document.write( "What is the cost of one donut? What is the cost of one large coffee?
\n" ); document.write( "------
\n" ); document.write( "6d+2c = 510 cents
\n" ); document.write( "5d+3c = 549 cents
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\n" ); document.write( "Modify for elimination::
\n" ); document.write( "30d + 10c = 2550
\n" ); document.write( "30d + 18c = 3294
\n" ); document.write( "--------
\n" ); document.write( "8c = 744
\n" ); document.write( "c = 93 cents
\n" ); document.write( "The cost of one large coffee is $0.93
\n" ); document.write( "18d + 6c = 1530
\n" ); document.write( "10d + 6c = 1098
\n" ); document.write( "------
\n" ); document.write( "8d = 432
\n" ); document.write( "d = 54 cents
\n" ); document.write( "The cost of one donut is $0.54
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\n" ); document.write( "Cheers,
\n" ); document.write( "Stan H.
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