Question

A jar contains 14 nickels, 10 dimes, 6 quarters, and 22 pennies. A coin is chosen at random from the jar. What is the probability that the coin chosen is a dime?

Answer 1

Let d = number of dimes
Let n = number of nickels
Let q = number of quarters
Let p = number of pennies
\[P(dime)=\frac{d}{n+d+q+p}\]