A. 3:12, reduced is 1:4
b. 4:3
c. 12:19
the answer is 240 seconds :)
give the other person brainliest
Compatible numbers<span> are </span>numbers<span> that are close in value to the actual </span>numbers<span>, and which makes it easier to do mental arithmetic.</span>
Answer:
Step-by-step explanation:

Answer:
The greatest common factor (GCF) of 18 and 20 is 2.
Step-by-step explanation:
To solve this problem, first, you have to find the greatest common factor of 18 and 20.
Factors of 18:
1, 2, 3, 6, 9, and 18.
Factors of 20:
1, 2, 4, 5, 10, and 20.
So, the greatest common factor (GCF) of 18 and 20 is 2.