Answer:
Step-by-step explanation:
Alright, lets get started.
Plant A produced 9000 panels.
Suppose plant B produced x panels.
Number of defective panels plant A produced = [tex]9000*\frac{6}{100}=540[/tex]
Number of defective panels plant B produced = [tex]x*\frac{1}{100}=\frac{x}{100}[/tex]
Total defective panels = [tex]540 + \frac{x}{100}[/tex]
We are given that, overall percentage of defective panels from the two plants was 4%.
[tex](9000+x)\frac{4}{100}=540 + \frac{x}{100}[/tex]
[tex]360+\frac{4x}{100}=540+\frac{x}{100}[/tex]
[tex]\frac{3x}{100}=180[/tex]
Cross multiplying
[tex]x=\frac{180*100}{3}[/tex]
[tex]x=6000[/tex]
hence plant B produced 6000 panels. : Answer
Hope it will help :)