sixth grade math
posted by mike T on .
Gene has less than 12 nickels,dimes,and quarters in his pocket.The probability of pulling out a nickel or a quarter is 3/4.The probabilty of pulling out a dime is 1/4.How many coins does Gene have in his pocket?How many of each does he have?Please explain

For your first question, the first sentence answers it, "12 nickels,dimes,and quarters in his pocket."
For the dime, 1/4 of 12 = 3
As I indicated before, there is not enough data to tell how many of the remaining 9 coins are nickels or quarters. Do you have more information that you have not included, for instance, the total value of the coins?