Posted by heavenly on Monday, December 10, 2012 at 11:49pm.
Natalie has a change purse full of coins. She has 13 pennies, 15 dimes and 22 nickels. If she takes a coin out of her purse, without looking, the probability that it will be a penny is?

math  Steve, Monday, December 10, 2012 at 11:56pm
13/(13+15+22) = 13/50
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