Two factory plants are making TV panels. Yesterday, Plant A produced 4
times as many panels as Plant B. Two percent of the panels from Plant A and
3% of the panels from Plant B were defective. How many panels did Plant B produce, if the two plants together produced 1210
defective panels?

Answer :

A=4B
2A/100 +3B/100=1210
8B/100+3B/100=1210
11B=121000
B=11000
A=44000

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