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March 6, 2015

March 6, 2015

Posted by **Anonymous** on Saturday, September 4, 2010 at 4:23am.

The candidate's environmental policy committee found that 60% of American trash is residential, while 40% is commercial. Four hundred and twenty-five pounds of residential trash occupy one cubic yard; whereas 375 pounds of commercial trash occupy one cubic yard.The total amount of trash dumped per day is 570,000 tons. find the total volume of commercial plus resid

- precal nightmare -
**drwls**, Saturday, September 4, 2010 at 5:01amThere are 0.60x570,000 = 342,000 tons = 6.84*10^8 lb per day of residential trash, occupying 1.609*10^6 cubic yards.

There are 0.40*570,000 = 228,000 tons = 4.56*10^8 lb per day of commercial trash, occupying 1.216*10^6 cubic yard.

Total cubic yards per day = 2.825*10^6 cubic yards.

Multiply this by 365 days for the volume deposited in a year. I get 1.616*10^9 cubic yards.

The area will be 1.616*10^9 square yards, since it is a yard thick.

The radius will be 22704 yards, or 12.89 miles.

- precal nightmare -
**Anonymous**, Saturday, September 4, 2010 at 7:10amIt's a multiple choice, those aren't one of the options. I'm not understanding where you got some of your numbers. Should 342,000 and 228,000 be divided by 425 to get the cubic yards?

- precal nightmare -
**drwls**, Saturday, September 4, 2010 at 7:38amThe two types of garbage get divided by different densities to get volumes.

The problem may be that the 60/40 ratio applies to volumes and not weights. That would require a different method. They should have said which it is.

I also could have made a math error. It happens.

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