Question 127492This question is from textbook fundamentals of maths
: i am having difficulty doing these two problems. can you help.
a wallet contains a one-dollar bill,a twenty dollar bill,a five dollar bill, a ten dollar bill. If a bill is chosen at random, find the probability that the value of the bill is less than twenty dollars. Here is how i try to do it.
1+5+10 =16
16 divide 36
This question is from textbook fundamentals of maths
Found 2 solutions by stanbon, solver91311:
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! a wallet contains a one-dollar bill,a twenty dollar bill,a five dollar bill, a ten dollar bill. If a bill is chosen at random, find the probability that the value of the bill is less than twenty dollars.
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# of bills less than twenty dollars: 3
# of bills: 4
P(bill is less than twenty dollars) = 3/4
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Cheers,
Stan H.
Answer by solver91311(24713)  (Show Source):
You can put this solution on YOUR website! You have 4 different things in your wallet, each of which has an equally likely chance of being chosen. Selecting any one of three of them would be considered a success in this experiment, because three of the four objects has a value less than $20. So your probability is  . The monetary value of the objects makes no difference. The problem would be exactly the same if you had 4 different colored pieces of paper in your wallet and you wanted to know the probability of selecting any color except for, say, yellow.
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