document.write( "Question 836295: Cement, gravel, and sand are to be combined into a mixture in the ratio of 3:5:7 respectively. If 5 tons of cement are available, how many tons of the mixture can be made? \n" ); document.write( "
Algebra.Com's Answer #504078 by jim_thompson5910(35256)\"\" \"About 
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3:5:7 means we have 3x, 5x and 7x of Cement, gravel, and sand where x is some number\r
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\n" ); document.write( "\n" ); document.write( "Since \"If 5 tons of cement are available\", we know \"3x+=+5\" and \"x+=+5%2F3\"\r
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\n" ); document.write( "\n" ); document.write( "So \"5x=5%285%2F3%29=25%2F3\" tons of gravel can be used\r
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\n" ); document.write( "\n" ); document.write( "and \"7x=7%285%2F3%29=35%2F3\" tons of sand can be used\r
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\n" ); document.write( "\n" ); document.write( "In total, \"5%2F3%2B25%2F3%2B35%2F3=%285%2B25%2B35%29%2F3+=+65%2F3\" tons of mix can be made\r
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\n" ); document.write( "\n" ); document.write( "Note: \"65%2F3\" is an improper fraction and \"65%2F3+=+21%262%2F3\" (the number on the right side is a mixed number)
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