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Mathematics 17 Online
OpenStudy (anonymous):

Demarco has a container with 48 quarters, 27 dimes, 12 nickels, and 38 pennies. He selects one coin at random. What is the probability that the coin will be a quarter or a dime?

OpenStudy (aa123):

hi

OpenStudy (aa123):

this is so easy

OpenStudy (aa123):

for a quarter is

OpenStudy (mathmale):

Several concepts come into play here: classical probability and joint probability. First you need to calculate P(draw a quarter) and P(draw a dime). Hint: How many coins, total, are in this container?

OpenStudy (anonymous):

125

OpenStudy (aa123):

it is

OpenStudy (aa123):

for quarters

OpenStudy (aa123):

umm

OpenStudy (aa123):

count all the dime and quarter and nickels

OpenStudy (aa123):

ok

OpenStudy (aa123):

you got to count all the quarters and your probility is 48/125 for quarters

OpenStudy (aa123):

did that help

OpenStudy (mathmale):

@aa123: This is marie's game, not yours. The fact that you have not rec'd a reply yet probably means that you have intimidated and/or overwhelmed her. Please STOP now.

OpenStudy (mathmale):

marie, may I help you?

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