SOLUTION: Beth has a quarter, a dime and a nickel in her pocket. She pulls out two coins at random. What is the expected value of the coins?

Question 865854: Beth has a quarter, a dime and a nickel in her pocket. She pulls out two coins at random. What is the expected value of the coins?
Found 2 solutions by Fombitz, richwmiller:
Answer by Fombitz(32388) (Show Source): You can put this solution on YOUR website!

Look at the possible choices.
,
,
,
,
,
,

Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
There are only six possible combinations
25+10=35
25+5=30
10+25=35
10+5=15
5+25=30
5+10=15
Each is equally likely.
which brings us to three possible sums
15,30,35 which each occur twice
which gives each sum 2 out of 6 chance or 1 out of 3
add them up and we get 80
80/3=26.67
so 26.67

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