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This problem covers the concepts in supply and demand.
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The problem asks us to use a supply and demand diagram to represent each of the following scenarios.
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Let's begin.
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For part a, let's begin by drawing a supply and demand diagram.
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I'll put q on the x -axis representing quantity and p on the y representing price.
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S -line represents the positive relationship between price and quantity, while the d -line represent the negative relationship between price and quantity.
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The equilibrium price is the intersection is resulted from the intersection between line s and d we'll call it p1 and the equilibrium quantity of q1.
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So the scenario in a says the improvement in transportation costs lower transportation lowers the cost of importing oil into the united states in the 60s.
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What's this scenario going to do to this graph? now since the transportation cost of oil is lowered, there will be a lot of people trying to get the oil at a lower price.
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And once there's many, many people getting to know the news, there will be a higher demand for oil at such a low price.
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And as there are higher demand for oil, this will drive the demand curve from d1 to d2.
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So the demand curve will shift up, resulting in an equilibrium price, a p2, which is higher than p1, and a equivalent of quantity of q2 which is either than q1.
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Okay, let's do the same thing in b.
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So the scenario in part b suggests that after the war, after a 73 war, oil producers cuts oil production sharply.
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So what's going to happen to this supply and demand graph? now, once the oil supply supply is cut substantially by the oil producers, the supply of oil would intuitively drop.
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So to represent this drop, line s1 will shift downwards to line s2, forming a lower equilibrium price by the higher equilibrium quantity.
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Okay.
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For part c, let's draw this again.
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Supply and demand, equilibrium price p1, quantity price quantity q1, sorry.
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And for scenario c, it says after the 80s, 1980, smaller automobiles get more miles per gallon.
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So as smaller automobiles get more miles per gallon, this means that it's more efficient for smaller automobiles to use the oil.
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That means the efficiency of having per gallon oil increases.
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This will shift the whole demand curve up because people knows that just a gallon of oil will now result in a more efficient travel time of smaller vehicles.
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And those owning smaller vehicles would demand more oil at this point, driving the oil demand up from d1 to d.
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And this graph looks similar to part a, resulting in the price of p2, higher than p.
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Q2, higher than q1.
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So for the fourth scenario, it says that a record -breaking cold winter in 95 to 96 i expectedly raised the demand for heating oil.
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Now this one is pretty straightforward because it's just as the cold winter kind of causes people to want more heat and need more heat, therefore leading to a higher demand in oil to power those heat...