The table below gives the domestic demand and supply schedules. Suppose the world price for a good is 40$ and the governemnt imposes a 20$ per unit tarriff. How much will the government collect as tarriff. And can someone please explain to me how you get the answer, because I am totally lost. A. 360 B. 80 C. 240 D. 320

Price (Dollars Per Unit) | Quanity Demanded (Units per day) | Quanity Supplied (Units per day) ..................40 ................................ ................22.......................................................14

.................50 ................................................. 21 ................................ .................... 15

.................60 ..................................................20 ................................ .....................16

..................70 .................................................19 ............................... .....................17

....................80 ...............................................18 ............................... .....................18

.....................90 ............................... ..............17 ............................... .....................19