I have ten U.S. coins worth a total of $1.19.   But if you give me a dollar bill, it is not possible for me to give you exactly a dollar's worth of change in return.   If one of my coins is a half dollar, what are the other nine coins?

 

Solution to the Problem:

Besides the half dollar, I have a quarter, four dimes, and four pennies.

David & Judy DIxon sent in the following solution using US coins that are no longer minted. 

# Coins  Coin Value   Total Value
1            $0.50           $0.50
1            $0.25           $0.25
3            $0.10           $0.30  
4            $0.03           $0.12      No longer minted
1            $0.02           $0.02      No longer minted  
________________________
10                             $1.19

Correctly solved by:

1. James Alarie University of Michigan -- Flint
Flint, Michigan
2. Sagar Patel Brookstone School
Columbus, Georgia
3. Shaan Arora Brookstone School
Columbus, Georgia
4. Richard K. Johnson La Jolla, California
5. David & Judy Dixon Bennettsville, South Carolina
6. Neal Amos Brookstone School
Columbus, Georgia
7. Tristan Collins Virginia Tech
Blacksburg, Virginia
8. Luke Mansour Columbus, Georgia
9. Tori Kennedy Brookstone School
Columbus, Georgia
10. Mr. Robb's 1st Block Discrete Math Class John Handley High School
Winchester, Virginia
11. Magdy Essafty Alexandria, Egypt
12. John Funk Ventura, California