The range is 17: 20 - 3 = 17
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The GCF of 15 and 27 is 3. The GCF of 15, 20 and 25 is 5. The GCF of 15, 27, 15, 20 and 25 is 1.
It is: 4 to 3
The Range is the difference between the lowest and highest values. Example: In {4, 6, 9, 3, 7} the lowest value is 3, and the highest is 9. So the range is 9 − 3 = 6. It is that simple!
3/4
To find the ratio of 20 and 15, you divide 20 by 15. The ratio is typically expressed in simplest form, so you would divide both numbers by their greatest common divisor, which in this case is 5. Therefore, the ratio of 20 to 15 is 4:3.