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

To solve this problem you must apply the proccedure shown below:

 1. You have that: Jonah needs to use 4 portable fans to cool his home for 3 months out of the year and the electricity to use one fan costs 1 cent per hour and each fan is on for about 96 hours per month.

 2. Keeping the information above on mind, you have:

 1 months96 hours
 3 months---a

 a=3x96
 a=288 hours

 288 hours x 1 cent per hour=288 cents

 3. Therefore, the total cost "x" is:

 x=288 cents x 4 fans=1152 cents

 The answer is: c. $11.52

 

The first one is correct