Working Out the Denominations of Coins

If you have enough different kinds of coins, you can create any number of money amounts. Some money amounts are possible with several different combinations of coins. You want to be creative. The standard U.S. coins are used in the problems in this section penny (l t), nickel (54), dime (10 t), quarter (254), half-dollar (504), and dollar (1004 or 1). 

Some people like to have lots of coins in their pockets. It gives them a feeling of wealth. Others don t like to have their pockets bulge too much, so they prefer not to have a lot of extra coins around. There are problems in this section for both types of people — depending on which type you are. 

The Problem Stefanie wants to give each of her children 424. How can she do this with the least number of coins for each child  

A certain country has just two kinds of coins. One coin is called a sevna and is worth 7 units. The other coin is a levna, and it s worth 11 units. Because of these strange units, some prices can t be paid for exactly using these coins. 

Residents can pay for items costing 7 units or 14 units or 18 units, and so on. What is the highest priced item that can tbe paid for with any combination of these coins  

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