Answer:
3
Step-by-step explanation:
List all possible factors of each number. The GCF will be the largest number they both share
Factors of 18: 1, 2, 3, 6, 18
Factors of 15: 1, 3, 5, 15
The largest number they both share is 3, so that is the GCF
number one
1= $11.25
2= $22.50
3= $33.75
4= $45
5= $56.25
6= $67.50
7= $78.75
the first thing you want to do is divide 45 by 4 and get 11.25 and then you keep adding 11.25 till you get to 78.75
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