 
<translate> Kudin tukwane shine 3 * $ 20 = $ 60. Kudin kwanon rufi 4 shine $ 100 - $ 60 = $ 40. Tun da kowane kwanon rufi iri ɗaya ne, farashin kwanon rufi 1 shine $ 40 / 4 = $ 10. Kudin kwanon rufi guda biyu shine $ 10 + $ 10 = $ 20. Saboda haka, amsar ita ce 20. <eng> The cost of the pots is 3 * $20 = $60. The cost of 4 pans is $100 - $60 = $40. Since each pan is the same price, the cost of 1 pan is $40 / 4 = $10. The cost of 2 pans is $10 + $10 = $20.
Thus, the answer is 20. 