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| Math Central | Quandaries & Queries |
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Show 12 ways to come up with 28 cents using only pennies, nickels and dimes |
Kiadadh,
Once you know how many dimes and nickels you have, you know how many pennies you must have (why?) and there is exactly one solution like that.
How many choices are there for number of dimes?
If there are no dimes, how many choices are there for the number of nickels without going over 28c?
If there is one dime...
Good Hunting!
RD
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