document.write( "Question 1066169: At the supermarket, each pound of soy beans costs 5 times as much as each pound of wheat. If the total cost of 4.7 pounds of soy beans and 2.4 pounds of wheat is $51.80, what is the cost of each pound of soy beans and each pound of wheat?
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Algebra.Com's Answer #681347 by josmiceli(19441) $\"\"$ $\"About$

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Let $\"+a+\"$ = cost/pound of soy beans
\n" ); document.write( "Let $\"+b+\"$ = cost/pound of wheat
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\n" ); document.write( "(1) $\"+a+=+5b+\"$
\n" ); document.write( "(2) $\"+4.7a+%2B+2.4b+=+51.8+\"$
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\n" ); document.write( "Substitute (1) into (2)
\n" ); document.write( "(2) $\"+4.7%2A5b+%2B+2.4b+=+51.8+\"$
\n" ); document.write( "(2) $\"+23.5b+%2B+2.4b+=+51.8+\"$
\n" ); document.write( "(2) $\"+25.9b+=+51.8+\"$
\n" ); document.write( "(2) $\"+b+=+2+\"$
\n" ); document.write( "and
\n" ); document.write( "(1) $\"+a+=+5%2A2+\"$
\n" ); document.write( "(1) $\"+a+=+10+\"$
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\n" ); document.write( "$10 = cost/pound of soy beans
\n" ); document.write( "$2 = cost/pound of wheat
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\n" ); document.write( "check:
\n" ); document.write( "(2) $\"+4.7a+%2B+2.4b+=+51.8+\"$
\n" ); document.write( "(2) $\"+4.7%2A10+%2B+2.4%2A2+=+51.8+\"$
\n" ); document.write( "(2) $\"+47+%2B+4.8+=+51.8+\"$
\n" ); document.write( "(2) $\"+51.8+=+51.8+\"$
\n" ); document.write( "OK \n" ); document.write( "

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