3000+8%(X+30000)=35940-0.2%
The solution is X=90000.
answer ...
(2) Assume that the investment of this batch of products is X yuan.
1. If scheme 1 is more profitable than scheme 2,
rule
3000+8%(X+30000)>35940-0.2%
Solution x > 90000.
2. If the profit of scheme 1 is as much as that of scheme 2,
rule
3000+8%(X+30000)=35940-0.2%
The solution is X=90000.
3. If Option 2 is more profitable than Option 1,
rule
3000+8%(X+30000)