00:01
Okay, so i've written out the supply and demand curve also with price as an independent variable so it's easier to graph.
00:08
So the demand curve looks like this intersect at 22 on the x -axis and 44 on the y -axis.
00:22
And the supply curve, let's see, when quantity is 0, price is 12.
00:32
And it goes up.
00:35
And we're asked to determine the equilibrium.
00:41
Well, let's see what we're really asked.
00:43
The maximum price the consumer is willing to pay for water.
00:46
Okay, so if you look at the demand curve, at a price of 44, there's zero demand.
00:52
So any price less than 44.
00:57
So the maximum price would be essentially 44.
01:00
The lowest price to induce supply we said is 12 when price is below 12 there will be no quantity supplied the equilibrium is going to be where these two curves intersect so we can just set them equal 22 minus p over 2 equals minus 12 plus p over 2 and let's just add the list term over here so we'll have p add 12 to both sides we'll have 34 so price is 34 so this isn't to scale obviously and at a price of 34 quantity will be 5 and you can get that by plugging into either one of the demand or supply curves...