Rodney has fifty coins, including at least one quarter, that are worth $1.00. If he loses one coin, what is the probability that it was a dime?
(A) 0.01 (B) 0.02 (C) 0.04 (D) 0.05 (E) 0.10
@Mertsj

Question

Rodney has fifty coins, including at least one quarter, that are worth $1.00. If he loses one coin, what is the probability that it was a dime?
(A) 0.01 (B) 0.02 (C) 0.04 (D) 0.05 (E) 0.10
@Mertsj

calculusxy · Answer

That's what it says in the problem. I imitated whatever it wrote.

calculusxy · Answer

@satellite73

calculusxy · Answer

I truly have no idea :/

calculusxy · Answer

They say that the answer is C but I don't get it.

mertsj · Answer

Oh.  I reread it.  They are worth 1.00 so you can figure out the composition of the 50 coins.  Work on it until you figure out which 50 coins add up to $100

mertsj · Answer

$1.00 not $100

calculusxy · Answer

That's going to take more than a while.

calculusxy · Answer

@hartnn

mertsj · Answer

1 quarter, 2 dimes, 45 pennies, 2 nickels

mertsj · Answer

Probability of losing a dime = 2/50

calculusxy · Answer

Can it be also possible that when you subtract 1.00-.25=.50 then you can think of about 0.5 of 1.00, which can be put as to 0.4

mertsj · Answer

However 1 -.25 is NOT .50

calculusxy · Answer

Sorry I meant 0.75

calculusxy · Answer

Um..may I ask..what school do you go to?