Question

3 kg of apples cost $4.50. what is the cost of 1 kg?

Explanation:

Step1: Identify the problem type

This is a unit - rate problem. We know the total cost for a certain quantity of apples, and we need to find the cost per 1 kg. The formula for unit rate (cost per kg in this case) is total cost divided by the total quantity.

Step2: Apply the formula

The total cost of apples is $4.50 and the total quantity is 3 kg. So we calculate the cost per kg as $\frac{4.50}{3}$.

Step3: Perform the division

When we divide 4.50 by 3, we get 1.50.

Answer:

The cost of 1 kg of apples is $1.50.