Answer:
$750
Step-by-step explanation:
Since Iba's estimate of returned products is 20 units for both year 1 and 2, and only 10 units have been returned by the end of year 1, they must record a refund liability = 10 units x selling price = 10 units x $75 per unit = $750
Refund liability should represent the total amount that Iba considers that its clients are entitled to receive.