contestada

The climate in which Jonah lives is mild all year long except during the hotter summer months. For 3 months out of the year, Jonah needs to use 4 portable fans to cool his home. If the electricity to use one fan costs 1 cent per hour and each fan is on for about 96 hours per month, what is his total electricity cost for the fans during one year? a. $6. 72 b. $3. 84 c. $11. 52 d. $2. 88 Please select the best answer from the choices provided A B C D.

Respuesta :

Using proportions, it is found that his total electricity cost for the fans during one year is given by:

b. $3.84

What is a proportion?

A proportion is a fraction of a total amount.

In this problem, for 3 months, he uses 4 portable fans, and each fan is on for about 96 hours per month, hence the total number of hours he uses it is:

4 x 96 = 384 hours.

The cost is one one cent per hour, hence:

$0.01 x 384 = $3.84.

Which means that the total cost is of $3.84, and option b is correct.

More can be learned about proportions at https://brainly.com/question/24372153

Otras preguntas