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September 20, 2014

September 20, 2014

Posted by **Anonymous** on Monday, October 24, 2011 at 9:51pm.

- Math - unreadable -
**Ms. Sue**, Monday, October 24, 2011 at 9:56pmPlease proofread, correct, and repost.

- Math -
**Steve**, Tuesday, October 25, 2011 at 4:37amtotal mass = 12a + b = 3105

7a + b = 1980

5a = 1125

a = 225

b = 1980-7(225) = 405

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