Problema Solution
Two factory plants are making TV panels. Yesterday, Plant A produced 7000 fewer panels than Plant B did. Two percent of the panels from Plant A and 5 percent of the panels from Plant B were defective. How many panels did Plant B produce, if the two plants together produced 840 defective panels?
Answer provided by our tutors
Let panels of factory A = A
for factory B = B
A = B - 7000
or B - A = 7000
defective panels
2 % A + 5% B = 840
2A + 5B = 84000
solving
we get B = 14000 Answer
A = 7000
Let panels for factory A = A
For factory B = B
A = B - 7000
or B - A = 7000
Defective panels
2 % A + 5 % B = 840
or
2A + 5 B = 84000
solving the two equations
we get
B = 14000
Panels produced by Factory B = 14000
Panels produced by Factory A = 7000