“A coin-sorting machine contains half dollars, dimes, and nickels worth \$3.60. There are 3 times as many nickels as half dollars and 2 more nickels than dimes. How many coins are in the machine?&...

There are some nickels, dimes, and quarters in a large piggy bank. For every 2 nickels, there are 3 dimes. For every 2 dimes, there are 5 quarters. There are 500 coins in all. How many nickels, dimes,...

I need to reach 1,000 coins. I only have earned 60 coins. I need 940 coins to reach 1,000. You earn 20 coins per day. If I'm only earning 20 coins per day how many days do I have left until I reach...

how many dimes and how many quarters does he have?

Kobe went to local bank to get \$20 in quarters, dimes and nickels for his restaurant. He got twice as many quarters as dimes. Also, he got 10 more nickels than dimes. How many of each type of coin...

A coin is tossed until we get the pattern HTH. Assume that H appears with probability p. What is the expected number of flips required? [Hint: Condition on the number of flips required to...

They have collected twice as many dimes as quarters, 22 more nickels than dimes, and 3 times as many pennies than nickels.   If they have collected a total of 2134 coins , how many of...

Kevin and Randy Muise have a jar containing 62 coins, all of which are either quarters or nickels. The total value of the coins in the jar is \$7.90. How many of each type of coin do they have?

A collection of 27 coins consists of \$0.20 and \$2.00 coins, and has a value of \$23.40. Find the number of coins of each denomination.

Kevin and Randy Muise have a jar containing 62 ?coins, all of which are either quarters or nickels. The total value of the coins in the jar is ?\$11.30 How many of each type of...

Jessie has 28 coins that are nickels and dimes.  If the value of the coins is \$1.95, how many coins of each type does she have?