document.write( "Question 270382: a concrete mix requires 2 parts sand and three parts cement. How manypds are need for 75 pounds of cement? ( guess an varable fraction problem) \n" ); document.write( "
Algebra.Com's Answer #198097 by dabanfield(803)![]() ![]() ![]() You can put this solution on YOUR website! a concrete mix requires 2 parts sand and three parts cement. How manypds are need for 75 pounds of cement? ( guess an varable fraction problem)\r \n" ); document.write( "\n" ); document.write( "The ratio of sand to cement in the concrete mixture is 2/3. Let x be the amount of sand needed to mix with 75 lbs of cement. \r \n" ); document.write( "\n" ); document.write( "Then we know that:\r \n" ); document.write( "\n" ); document.write( "2/3 = x/75\r \n" ); document.write( "\n" ); document.write( "Multiply both sides of the equation above by 75:\r \n" ); document.write( "\n" ); document.write( "(2/3)*75 = (x*75)/75\r \n" ); document.write( "\n" ); document.write( "50 = x \n" ); document.write( " |