It is asking you to convert them to different units of measurements.
Answer:

Step-by-step explanation:
1) Convert
to improper fraction. Use this rule:
.

2) Simplify 4 * 3 to 12.

3) Simplify 12 + 1 to 13.

4) Convert
to improper fraction. Use this rule:
.

5) Simplify 1 * 3 to 3.

6) Simplify 3 + 2 to 5.

7) Join the denominators.

8) Simplify.

9) Convert to mixed fraction.

(Decimal Form: 2.666667)
Thank you,
Eddie
Answer: It should be the third one
Step-by-step explanation:
The unit price per kg is $5, to find this divide the 9 kilograms into the price $45 the answer is what each kilogram is worth