Answer:
a. $22.80
Step-by-step explanation:
Given :
Brand C washer uses about $0.65 per load
Brand D washer uses about $0.27 per load
Kevin averages about five loads of laundry per month.
To Find :how much more would the utility costs for a Brand C washer be than the utility costs for a Brand D washer after one year?
Solution :
The utility cost of Brand C washer per load = $0.65
Since she uses 5 loads per month
So, she uses loads in 12 months(=1year) = 5*12 =60 loads
Now cost of 60 loads is 60*0.65 = $39
Thus the utility cost of Brand C for 1 year is $39
The utility cost of Brand D washer per load = $0.27
Since she uses 5 loads per month
So, she uses loads in 12 months(=1year) = 5*12 =60 loads
Now cost of 60 loads is 60*0.27 = $16.2
Thus the utility cost of Brand D for 1 year is $16.2
The difference between their 1 year costs = $39-$16.2 = $22.8
Thus the utility costs for a Brand C washer will be $22.8 more than the utility costs for a Brand D washer.
Hence Option A is correct.
