Fossil fuels are produced by the decay of the organic material over millions of years. To make one gallon of gas, it takes about 98 tons of organic material, roughly the amount of wheat the could be harvested in a 40 acre field. Write an expression for the amount (in tons) of the organic material it takes to make (g) gallons of gas. How many tons would it take to make enough gas to fill a cars 20 gallon gas tank?

Question

anonymous · Answer

@Loser66

loser66 · Answer

Make clear, please: "Write an expression for the amount (in tons ) of organic material it takes to make (g) gallons of gas" 
My question: g??

anonymous · Answer

there is two parts yes (g) and find how many tons it would take to make enough gas to fill a cars 20 gallon gas tank

loser66 · Answer

We have the fraction like this 
$$\dfrac{98 \text {tons organic material}}{1\text{gallon of gas}}$$
does it make sense??

anonymous · Answer

yes

loser66 · Answer

so, to make g gallon, we just times g to that fraction
Let T stands for the amount of organic material, you have T= 98 g. Done

loser66 · Answer

for the second part, just replace g =20 into the expression to get number of organic material

anonymous · Answer

can you give me the answer though? @Loser66

anonymous · Answer

oh never mind thanks