Question

In: Statistics and Probability

Which of the following problems cannot be solved using a proportional relationship? (i) A 30-mile drive...

Which of the following problems cannot be solved using a proportional relationship?

(i) A 30-mile drive is about 48.3 kilometers. Approximately how many kilometers is a 60-mile drive?

(ii) A gallon of gas costs $3.49 on October 8, 2011 at the Chevron station on the corner of Imola and Soscol. What does 10 gallons of gas cost on that same day at the same station?

(iii) A car travels 50 miles in 2 hours in heavy traffic. How long does it take the car to travel 25 miles in light traffic?

Expert Solution

Solution:

The correct answer is:

(iii) A car travels 50 miles in 2 hours in heavy traffic. How long does it take the car to travel 25 miles in light traffic?

Explanation:

The option (i) can be solved using a proportional relationship as:

We are given that a 30-mile drive is about 48.3 kilometers.

Therefore, we have:

Therefore, the 60-mile drive is:

The option (ii) can be solved using a proportional relationship as:

we are given that a gallon of gas costs $3.49 on October 8, 2011, at the Chevron station on the corner of Imola and Soscol.

Therefore, the 10 gallons of gas cost on that same day at the same station is:

The option (iii) can not be solved using the proportional relationship because we are given a car travels 50 miles in 2 hours in heavy traffic but we have to find how long does it take the car to travel 25 miles in light traffic.

orchestra answered 2 years ago

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