<u>biomass can be converted directly into liquid fuels, called "biofuels," to help meet transportation fuel needs. The two most common types of biofuels in use today are ethanol and biodiesel, both of which represent the first generation of biofuel technology.</u>
That would be (171 + x) / 2....what u do to find the average is add up all the numbers, then divide by how many numbers there are.
To work out the profit, firstly, you have to work out the cost of buying them, which is $15 multiplied by 100, which is $1500. You then have to work out what he sold them all at, which is $29.99 multiplied by 100, which is $2999. You then have to subtract $1500 from $2999, giving you $1499. Therefore, Ace made $1499 in profit.
Hope this helps :)
Answer:
25 kilometers per hour
Step-by-step explanation:
I just simply made it into a proportion of 50/2=x/1 and 50 divided by 2 is 25. hopefully that help you.