Unearned revenues are generally revenues that have been earned and received in cash revenues that have been earned but not yet collected in cash liabilities created when a customer pays in advance for products or

Unearned revenues are general revenues that  Liabilities created when a customer pays in advance for products or services before the revenue is earned

If a client pay us for our service in advance, we now have an obligation to provide services that we must fulfill in the future.
In accounting, we could consider this obligation as a liability which will be recorded in credit when it increased.

Acreditor is an entity or person that lends money or extends credit to another party. a debtor is an entity or person that owes money to another party.

$527.7.if the following was the question  $527.7 is the answer.students who are trying to raise funds have an agreement with a local pizza chain. the chain has agreed to sell them pizzas at a discount, which the students can then resell to families in the local community for a profit. it is expected that of the 500 families in the community, at most 70% will buy pizza. based on a survey of their personal preferences, the students believe that they should order no more than 120 cheese pizzas, no more than 150 pepperoni pizzas, and no more than 100 vegetarian pizzas. they also want to make sure that at least 20% of the total pizzas are cheese and at least 50% of the pizzas are pepperoni. they make a profit of $1.45, $1.75, and $1.98, respectively, for each cheese, pepperoni, and vegetarian pizza they resell. how many pizzas of each type should they buy?