document.write( "Question 153899This question is from textbook
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document.write( ": concrete mix
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document.write( " A builder makes a certain type of concrete by mixing together 1 part portland cement (made from line and clay),3 parts sand ,and 5 parts crushed stone(by volume).If 765 ft^3 of concrete are needed ,how many cubic feet of each ingredient does he need?\r
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document.write( " iam trying to learn how to master worded problems, but i am faced with a lot of obstacles.However i would appreciate it very much if you could help me solve this problem.Thank you \n" );
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Algebra.Com's Answer #113275 by dolly(163)![]() ![]() ![]() You can put this solution on YOUR website! Hi,\r \n" ); document.write( "\n" ); document.write( "The ratio of cement, sand and crushed stone = 1 : 3 : 5 \n" ); document.write( "==> x cu ft of cement is added to 3x cu ft of sand and mixed with 5x cu ft of stone to get the required volume of concrete.\r \n" ); document.write( "\n" ); document.write( "Volume of concrete needed = 765 cu.ft \n" ); document.write( "==> x + 3x + 5x = 765 \n" ); document.write( "==> 9x = 765 \n" ); document.write( "==> x = 765/9 \n" ); document.write( "==> x = 85\r \n" ); document.write( "\n" ); document.write( "Thus volume of cement to be mixed = 85 cu ft \n" ); document.write( "Volume of sand to be mixed = 3*85 = 255 cu ft \n" ); document.write( "Volume of stone to be mixed = 5*85 = 425 cu ft\r \n" ); document.write( "\n" ); document.write( "Good luck!!!!\r \n" ); document.write( "\n" ); document.write( "Dolly\r \n" ); document.write( " \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |