find how many panels plant B produce

Question

Two factory plants are making TV panels. Yesterday, Plant A produced 9000 panels. One percent of the panels from Plant A and 6% of the panels from Plant B were defective. How many panels did Plant B produce, if the overall percentage of defective panels from the two plants was 3%?

Answer 1

company A produced 9000 panels with 1% defective

company B has 6% defective

overall defect rate was 6%

how many panels did B produce?? six thousand

.01(9000) = 90 defects for A

6-3 = 3

3-1 =2

3/2 times more panels for A than B

2/3 of 9000 = 6000 panels for B

.06(6000) = 360 defects for B

.01(9000) = 90 defects for A

.03(1500) = 450 defects overall

Answer 2

0.01(9000) + 0.06(x) = 0.03(9000 + x)

Can you solve for x and answer?