The average weekly number of toy planes produced by Factory F and G is 3249. The average weekly number of toy planes produced by Factory F and H is 6299. If Factory G produced ²₇ as many toy planes as Factory H each week, how many toy planes does Factory F produce weekly?
Total toy planes that Factory F and Factory G produced
= 3249 x 2
= 6498

Total toy planes that Factory F and Factory H produced
= 6299 x 2
= 12598

Number of toy planes produced by Factory G = 2 u
Number of toy planes produced by Factory H = 7 u

Factory F's toys + 2 u = 6498 --- (1)
Factory F's toys + 7 u = 12598 --- (2)

(2) - (1)
7 u - 2 u = 12598 - 6498
5 u = 6100
1 u = 6100 ÷ 5 = 1220

Number of toy planes produced by G
= 2 u
= 2 x 1220
= 2440

Number of toy planes produced by F
= 6498 - 2440
= 4058

Answer(s): 4058