document.write( "Question 1030336: In a mixture of concrete, there are five lb of cement mix for each pound of gravel. If the mixture contains a total of 90 lb of these two ingredients, how many pounds of gravel are there? \n" ); document.write( "

Algebra.Com's Answer #645225 by ikleyn(52790) $\"\"$ $\"About$

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\n" ); document.write( "In a mixture of concrete, there are five lb of cement mix for each pound of gravel.
\n" ); document.write( "If the mixture contains a total of 90 lb of these two ingredients, how many pounds of gravel are there?
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document.write( "Group (mentally) 5 lb of cement with 1 pound of gravel.\r\n" );
document.write( "You will get groups of cement-gravel of total weight 6 pounds each.\r\n" );
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document.write( "The number of groups is  = 15.\r\n" );
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document.write( "So, there are 15 lb of gravel in the mixture.\r\n" );
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