SOLUTION: Gwynedd's piggy bank contains 57 quarters, 24 dimes, 35 nickels, and 60 pennies. Gwynedd turns her piggy bank over and one coin falls out. What is the probability that the coin wil

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Question 1020823: Gwynedd's piggy bank contains 57 quarters, 24 dimes, 35 nickels, and 60 pennies. Gwynedd turns her piggy bank over and one coin falls out. What is the probability that the coin will be worth more than 5 cents?
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a. What is the probability that the coin is a quarter or dime? *solved already: 81/176*
b. What is the probability that the coin is a quarter or worth more than five cents?
c. Explain how the previous two answers are related.

Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
So it's either a dime or quarter.
P=%2857%2B24%29%2F%2857%2B24%2B35%2B60%29=81%2F176
.
.
.
P%28Q%29=57%2F176<--- Coin is a quarter
P%28V%3E5%29=81%2F176<--- Coin is worth more than 5 cents
P%28Q_and_V%3E5%29=57%2F176 <--- Coin is a quarter and is worth more than 5 cents
So then,
P=57%2F176%2B81%2F176-57%2F176
P=81%2F176