A few days ago
Probability with Counting Question.?
Ok. A piggy bank contains nickles, dimes and quarters. The # of quarters is 8 more than twice the # of dimes, and the # of nickles is 4 less than the # of dimes. If the piggy bank was shaken so that a coin with fall out, the probability is 3/4 that the first coin will be a quarter.
What’s the total value of the coins in the bank?
Top 1 Answers
A few days ago
Favorite Answer
Q = 8 + 2D
N = D – 4
3/4(N + D + Q) = Q
if you solve this system of equations you’ll find there are:
5 dimes
1 nickel
18 quarters
the total is $5.05
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