SOLUTION: An electric heating system costs $5000 to install, with yearly operating cost of $1100. A gas heating system costs $12000 to install, with yearly operating cost of $700. After a pe

Question 984873: An electric heating system costs $5000 to install, with yearly operating cost of $1100. A gas heating system costs $12000 to install, with yearly operating cost of $700. After a period of time the total costs for electric heating and gas heating will be the same. What will the total cost be at that time?
Answer by macston(5194) (Show Source): You can put this solution on YOUR website!
.
y=number of years
.
$5000+$1100y=$12000+$700y
$400y=$7000
y=17.5
ANSWER 1: The total cost will be the same in 17.5 years.
.
CHECK:
$5000+$1100(17.5)=$12000+$700(17.5)
$5000+$19250=$12000+$12250
$24250=$24250
ANSWER 2: The total cost for either after 17.5 years will be $24250.

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