Answer: The answer is 11.69%.
Step-by-step explanation: Given that there is a bag full of coins, in which
Number of pennies = 5,
number of nickels = 10
and number of dimes = 4.
Therefore, total number of coins in the bag = 5 + 10 + 4 =19.
According to the question, first we draw a nickel, so probability will be

and then, without replacement, we draw a dime, so probability will be

So, the required probability will be

Thus, the probability is 11.69%.