The average weekly number of toy trains produced by Factory W and X is 3532. The average weekly number of toy trains produced by Factory W and Y is 6991. If Factory X produced ²₅ as many toy trains as Factory Y each week, how many toy trains does Factory W produce weekly?
Total toy trains that Factory W and Factory X produced
= 3532 x 2
= 7064

Total toy trains that Factory W and Factory Y produced
= 6991 x 2
= 13982

Number of toy trains produced by Factory X = 2 u
Number of toy trains produced by Factory Y = 5 u

Factory W's toys + 2 u = 7064 --- (1)
Factory W's toys + 5 u = 13982 --- (2)

(2) - (1)
5 u - 2 u = 13982 - 7064
3 u = 6918
1 u = 6918 ÷ 3 = 2306

Number of toy trains produced by X
= 2 u
= 2 x 2306
= 4612

Number of toy trains produced by W
= 7064 - 4612
= 2452

Answer(s): 2452