SOLUTION: A landlord owns a house that consumes 2200 L of heating oil in three winters. He buys another (insulated) house, and the two houses together use 1700 L of oil in two winters. How m

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Question 1073508: A landlord owns a house that consumes 2200 L of heating oil in three winters. He buys another (insulated) house, and the two houses together use 1700 L of oil in two winters. How many winters would it take the insulated house alone to use 1150 L of oil? Round your answer to 1 decimal place.

Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
The regular house consumes the oil at a rate 2200%2F3 LITERS per WINTER.

The new insulated house consumes at an unknown rate, r, in LITERS per WINTER.

The two houses consumed 1700 liters in 2 winters.

highlight_green%28%282200%2F3%2Br%29%2A2=1700%29

Solve for r, and THEN use it to answer the question of how many winters for it to consume 1150 L of oil.

r=1700%2F2-2200%2F3

r=850-2200%2F3

highlight_green%28r=350%2F3%29, or about highlight_green%28116%262%2F3%29 LITERS per WINTER.


How many winters insulated house consume 1150 L?
1150%2AL%2A%283%2F350%29%28W%2FL%29
highlight%289.9%2AWINTERS%29