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Brian wants to buy a muffin that costs $0.80. How many different combinations of nickels and dimes can be used to make $0.80?

 Aug 14, 2019
edited by Guest  Aug 14, 2019
 #1
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+1

Just count them:

 

N       D
16      0
14      1
12      2
10      3
8        4
6        5
4        6
2        7
0        8

 Aug 15, 2019
 #2
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Not criticizing, just curious.  Would 16 N & 0 D, and 0 N & 8 D, be considered combinations, since there is only one type of coin used? 

.

Guest Aug 15, 2019
 #3
avatar+103693 
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Yes i believe they should be included.  Even though there is a zero count of one of them, each one is still a valid combination.

Melody  Aug 18, 2019

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