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Mathematics 16 Online
OpenStudy (anonymous):

Fred has 10 coins in a book bag. He has 4 quarters, 1 penny, and 5 dimes. If Fred reaches into his book bag and draws a coin without looking, what is the probability that he will draw a quarter? A. 25% B. 10% C. 40% D. 20%

pooja195 (pooja195):

Each coin has a 1/10 probability of being drawn. There are 4 quarters, therefore the probability of drawing a quarter is 4×1/10

pooja195 (pooja195):

do you get it?

pooja195 (pooja195):

now just multiply \[4×1/10 \]

OpenStudy (anonymous):

40%

OpenStudy (anonymous):

becuase if he has 4 quarters 1 penny 5 dimes we add them and get 10 and we can pretend the 10 is 100 4 = 40 1=10 5 =50. So there for 4=40 and 40 is 40% of 100

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