https://mechanics.stackexchange.com/a/23916/922
The gist is that if we decide that we need any fixed amount of any of the oil products, that product becomes expensive and the remaining products become inexpensive byproducts of its production.
https://mechanics.stackexchange.com/a/23916/922
The gist is that if we decide that we need any fixed amount of any of the oil products, that product becomes expensive and the remaining products become inexpensive byproducts of its production.