Answer:
To write the ratio 3.0 to 1.2 in lowest terms using a colon, we need to divide both numbers by their greatest common factor (GCF).
The GCF of 3.0 and 1.2 is 0.6, since:
3.0 = 5(0.6)
1.2 = 2(0.6)
Dividing both numbers by 0.6, we get:
3.0/0.6 = 5
1.2/0.6 = 2
Therefore, the ratio 3.0 to 1.2 in lowest terms using a colon is:
5:2