How to do this problem? help please.

A piggy Bank containing only quarters has a mass of 850 grams when empty and 7822 grams when filled. if a quarter weights 5.6 estimate a amunt of money inside the piggy bank.
Asked Sep 13, 2014

TIP: If it's not your answer to this question, please click "Leave a Comment" button under the question to communicate with the question owner.