Two factory plants are making TV panels. Yesterday, Plant A produced 3000 fewer panels than Plant B did. Three percent of the panels from Plant A and 5% of the panels from Plant B were defective. How many panels did Plant B produce, if the two plants together produced 1190 defective panels?

Question

anonymous · Answer

Production from plant a = (b-3000) 

3% of a plus 5% of b = 1190


so, (b-3000) x 3/100 + b x 5/100 = 1190 
From this you can work out b

anonymous · Answer

so to get b i do 8% of 1190?

anonymous · Answer

it will be 0.03b-90+0.05b=1190
then when you combine like terms it turns into 0.08b-90=1190
then you can just solve for b by dividing 1190 by 0.08 

so technically yes you are right haha i just had to write out the math real fast