Refer to the information provided in Figure 18.4 below to answer the questions that follow. 
Figure 18.4
-Refer to Figure 18.4. The domestic price of a leather wallet is $20. With free trade the price of a leather wallet is $10 and after a tariff is imposed the price is $15. If the tariff is changed so that it is now ________, tariff revenue in this country will be zero.
Definitions:
Uncollectible Accounts
Accounts receivable that are recognized as uncollectible losses due to the inability to collect from the debtor.
Allowance Method
An accounting technique used to estimate and account for bad debts (uncollectible receivables) based on historical data or economic conditions.
Allowance for Doubtful Accounts
A contra asset account used to estimate the portion of a company's receivables that may ultimately not be collected.
Allowance for Doubtful Accounts
An accounting provision representing an estimate of accounts receivable that may not be collected.
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