The average weekly number of toy cars produced by Factory J and K is 3754. The average weekly number of toy cars produced by Factory J and L is 7084. If Factory K produced ²₇ as many toy cars as Factory L each week, how many toy cars does Factory J produce weekly?
Total toy cars that Factory J and Factory K produced
= 3754 x 2
= 7508

Total toy cars that Factory J and Factory L produced
= 7084 x 2
= 14168

Number of toy cars produced by Factory K = 2 u
Number of toy cars produced by Factory L = 7 u

Factory J's toys + 2 u = 7508 --- (1)
Factory J's toys + 7 u = 14168 --- (2)

(2) - (1)
7 u - 2 u = 14168 - 7508
5 u = 6660
1 u = 6660 ÷ 5 = 1332

Number of toy cars produced by K
= 2 u
= 2 x 1332
= 2664

Number of toy cars produced by J
= 7508 - 2664
= 4844

Answer(s): 4844