document.write( "Question 25097: In a mixture of concrete there are 3lbs of cement mix for every 1lb of gravel. If the mixture contains a total if 140lbs of these two ingredients how many pound of gravel are there? \n" ); document.write( "

Algebra.Com's Answer #46160 by 303795(602) $\"\"$ $\"About$

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For each 3 lbs of cement there is 1 lb of gravel for a total of 4 lbs. The gravel is therefore 1/4 of the mixture.
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