document.write( "Question 233013: can you help me with this word problem..??\r
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document.write( "Roast Beef has 25g or protein and 11g of calcium per serving. A serving of mashed potatoes has 2g of protein and 25g of calcium. How many servings of each are needed to supply exactly 29g of protein and 61g of calcium?\r
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document.write( "Thanks so much! \n" );
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Algebra.Com's Answer #172089 by ankor@dixie-net.com(22740)![]() ![]() You can put this solution on YOUR website! Roast Beef has 25g or protein and 11g of calcium per serving. \n" ); document.write( " A serving of mashed potatoes has 2g of protein and 25g of calcium. \n" ); document.write( " How many servings of each are needed to supply exactly 29g of protein and 61g of calcium? \n" ); document.write( ": \n" ); document.write( "let b = servings of beef \n" ); document.write( "let p = servings of potatoes \n" ); document.write( ": \n" ); document.write( "Write two equations, one for protein and one for calcium \n" ); document.write( ": \n" ); document.write( "Protein \n" ); document.write( "25b + 2p = 29 \n" ); document.write( ": \n" ); document.write( "Calcium \n" ); document.write( "11b + 25p = 61 \n" ); document.write( ": \n" ); document.write( "Multiply the 1st equation by 25, multiply the 2nd by 2 \n" ); document.write( "625b + 50p = 725 \n" ); document.write( "22b + 50p = 122 \n" ); document.write( "-------------------subtraction eliminates p \n" ); document.write( "603b = 603 \n" ); document.write( "b = 1 serving of beef \n" ); document.write( ": \n" ); document.write( "Find p \n" ); document.write( "25(1) + 2p = 29 \n" ); document.write( "2p = 29 - 25 \n" ); document.write( "2p = 4 \n" ); document.write( "p = 2 servings of potatoes \n" ); document.write( "; \n" ); document.write( "; \n" ); document.write( "check solution in the calcium equation \n" ); document.write( "11(1) + 25(2) = 61 \n" ); document.write( " |