Question 775720
Let the no. of units = N.


Total cost price = Initial investment + Unit cost price x No. of units = $(12000+11.5N).


Total sale price = Unit sale price x No. of units = $19.5N


Profit = Total sale price - Total cost price


1000 = 19.5N - (12000+11.5N)
1000 = 8N - 12000
8N = 13000
N = 1625


So 1625 units must be produced to earn a profit of $1000.