Answer:
10781
Explanation:
In order to find the additional annual revenue for the two method a break even point must be calculated
Method A
=-8000(1.1)^6+20000(1.1)^6-22000-(u)
=-15776.44-22000 -u
=-37776.44-u
Method B
= -52000(1.1)^6+15000(1.1)^6-17000-2u
=9995.4-17000-2u
=-26995.47-2u
Then equate the two equations
-37776.44-u=-26995.47-2u
u=10781