SOLUTION: A piggy bank containing only quarters has a mass of 850 grams when empty and 7822 when filled. If a quarter weighs 5.6 grams,about how many coins will be inside the piggy bank?
b
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Question 1106882: A piggy bank containing only quarters has a mass of 850 grams when empty and 7822 when filled. If a quarter weighs 5.6 grams,about how many coins will be inside the piggy bank?
b)How much money will be inside the piggy bank?
Answer by Theo(13342) (Show Source): You can put this solution on YOUR website!
the piggy bank weighs 850 grams when it is empty and weighs 7822 grams when it is filled with quarters.
that means the total weight of the quarters is 7822 - 850 = 6972 grams.
since each quarter weighs 5.6 grams, then the number of quarters has to be 6972 / 5.6 = 1245.
there are 1245 quarters in the piggy bank.
since there are 4 quarters to a dollar, then 1245 quarters / 4 = 311.25 dollars, or 311 dollars and 25 cents.
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