company c sells a line of 20 products with an average retail price of $ 1,200 . if none of these products sells for less than $ 400 , and exactly 10 of the products sell for less than $ 1,000 , what is the greatest possible selling price of the most expensive product ?
n0 = 20.0
n1 = 1200.0
n2 = 400.0
n3 = 10.0
n4 = 1000.0
t0 = n0 * n1
t1 = n2 * n3
t2 = n3 - 1.0
t3 = n4 * t2
t4 = t3 + t1
answer = t0 - t4
print(answer)