The average weekly number of toy trains produced by Factory T and U is 3230. The average weekly number of toy trains produced by Factory T and V is 6555. If Factory U produced ²₇ as many toy trains as Factory V each week, how many toy trains does Factory T produce weekly?
Total toy trains that Factory T and Factory U produced
= 3230 x 2
= 6460

Total toy trains that Factory T and Factory V produced
= 6555 x 2
= 13110

Number of toy trains produced by Factory U = 2 u
Number of toy trains produced by Factory V = 7 u

Factory T's toys + 2 u = 6460 --- (1)
Factory T's toys + 7 u = 13110 --- (2)

(2) - (1)
7 u - 2 u = 13110 - 6460
5 u = 6650
1 u = 6650 ÷ 5 = 1330

Number of toy trains produced by U
= 2 u
= 2 x 1330
= 2660

Number of toy trains produced by T
= 6460 - 2660
= 3800

Answer(s): 3800