Help! This is a part of my assignment that is due today and I am lost! Could someone help me work this problem out? Thanks!

A shoe store costs $1800 dollars a month to operate. The average wholesale cost of each pair of shoes is $25, and the average price of each pair of shoes is $65. How many pairs of shoes must the store sell each month to break even? Show all steps.

~ASAP!~

- lue

revenue = n p = 65 n

cost = 1800 + 25 n
so
1800 + 25 n = 65 n
40 n = 1800
n = 180/4 = 90/2 = 45 pairs