Final answer:
To find the unit rate of the fractions 4/2 and 12/4, divide the numerator by the denominator. For 4/2, the unit rate is 2, and for 12/4, it is 3.
Step-by-step explanation:
A unit rate is a ratio that compares two numbers and has 1 as its second term.
To calculate this, you just need to divide the first number by the second number in your fraction.
For the examples provided, let's do this step-by-step.
For 4/2, you divide 4 by 2, which equals 2. So, the unit rate is 2 per 1, or simply 2.
For 12/4, you divide 12 by 4, which also equals 3, giving you a unit rate of 3 per 1, or simply 3.