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In how many different ways can change be given for a 50 cent coin using only 20 cent, 10 cent, and 5 cent coins? Justify your answer.

Sagot :

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Answer: 9

Step-by-step explanation:

20+20+10

20+10+10+10

20+10+5+5+5+5

10+10+10+10+10

10+10+10+10+5+5

10+10+10+5+5+5+5

10+10+5+5+5+5+5+5

10+5+5+5+5+5+5+5+5

5+5+5+5+5+5+5+5+5+5

Answer: 13 ways

Step-by-step explanation:

use the properties of addition to help

one way to solve this problem is

20+20+10

another way is

20+10+10+5+5

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