Ellen purchased a dishwasher, which cost $315 before the 9. 22% sales tax. She used the machine an average of 10 times per week

Question

2 years ago

9

Ellen purchased a dishwasher, which cost $315 before the 9. 22% sales tax. She used the machine an average of 10 times per week

for the next six years, at which point she replaced it. Each time she ran the dishwasher it cost her $0. 09 for water and $0. 13 for electricity. What was the lifetime cost of Ellen's dishwasher? a. $1,030. 44 b. $686. 40 c. $1,093. 73 d. $749. 69 Please select the best answer from the choices provided. A B C D.

Mathematics

1 answer:

gulaghasi [49] · Answer 1 · 2023-05-10T01:28:43+03:00

The entire cost is the sum of the dishwasher after sales tax, water, and electricity is 1030.44 dollars.

<h3>What is the percentage?</h3>

The amount of something is expressed as if it is a part of the total which is a hundred. The ratio can be expressed as a fraction of 100. The word percent means per 100. It is represented by the symbol ‘%’.

Ellen purchased a dishwasher, which cost $315 before the 9. 22% sales tax.

She used the machine an average of 10 times per week for the next six years, at which point she replaced it.

Each time she ran the dishwasher it cost her $0. 09 for water and $0. 13 for electricity.

The cost of a dishwasher after sales tax will be

Cost = 1.0922 × 315 = $ 344.043

The running total time of dishwasher in 6 years will be

Total running time = 10 × 52 × 6

Total running time = 3120

She ran the dishwasher 3,120 times in 6 years.

The cost of water in these six years will be

Cost of water = 0.09 × 3120 = $ 280.8

The cost of electricity in these six years will be