# Answer to Question #3732 in Algebra for stephen Wright

Question #3732
If the US population was 200,000,000 and the cost of fuel was \$2.00 per Litre and petrol mileage is 20 km/litre and you buy every single person in the US a \$2,000 car and enough fuel to run it nonstop at 20 mph for a year: How much money would you spend?
Let&#039;s count how much money we will spend for 1 person during a year driving his car :

20 [miles/h] &times; 1.6 [km/mile] &times; 8760 [hours/year] &times; 1/20 [litr/km] &times; 2 \$/litr = \$28032
Where 1/20 [litr/km] is how much fuel a car needs to drive 1 km
And 1.6 is a coefficient between miles and kilometers.
Then we add the cost of a car for 1 person and multiply this sum on 2&times;108 population :
2 &times; 108 &times; (\$2000 + \$28032) = \$6 &times; 1012

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Miguel A Rivera
27.07.11, 02:23

Let the US population be "K", cost of fuel per Car for a year be "L", new car cost be "C"... (K(L+C))= Answer
The car travels 32.18688Km/hr for 1 year...there are 8,765.81hrs in a year. So each car travels a distance of (32.19*8,765.81)= 282,144.16Km per year. If we divide the total mileage per year then we can figure out how many liters of fuel it used in a year, hence how much we spent...per car. (282,144.16)/(20)= 14,107.21, 14,107.21*\$2= \$28,214.42 per car on fuel = L..
2e8(28,214.42+\$2k) = \$6.042884e12