00:02
There are five questions given to us that is a, b, c, d and e.
00:07
So in question a, we have to calculate the total economic surplus at the free market equilibrium price and quantity.
00:16
So we can use the formula total economic surplus is equal to producer surplus plus consumer surplus.
00:42
So producer surplus is equal to 0 .5 multiplied by market price.
00:56
Subtracted from minimum supply price.
01:07
Multiplied by quantity.
01:12
Which is equal to 0 .5 multiplied by 10 subtracted from 3 multiplied by 10, which is equal to 35 then consumer surplus is equal to 0 .5 multiplied by market.
01:31
Sorry maximum willingness to pay subtracted from market price.
01:49
Multiplied by quantity.
01:54
Which is equal to putting the value 0 .5 multiplied by 15 subtracted from 10 multiplied by 10, which is equal to $25.
02:05
So total surplus is equal to $35 that is producer surplus added to $25 that is consumer surplus is equal to we get 60 per day.
02:25
Now in question b, we have to calculate the total economic surplus with the price selling at $7.
02:34
So we need to determine the new quantity exchange and the new consumer surplus.
02:38
So new quantity exchange is equal to quantity at price selling.
03:04
Which is equal to 10 subtracted from 10 subtracted from 7 is equal to 7 units.
03:14
So producer surplus same formula that is 0 .5 multiplied by market price subtracted from minimum supply price multiplied by quantity...