The average weekly number of toy planes produced by Factory H and J is 3837. The average weekly number of toy planes produced by Factory H and K is 6602. If Factory J produced ²₇ as many toy planes as Factory K each week, how many toy planes does Factory H produce weekly?
Total toy planes that Factory H and Factory J produced
= 3837 x 2
= 7674

Total toy planes that Factory H and Factory K produced
= 6602 x 2
= 13204

Number of toy planes produced by Factory J = 2 u
Number of toy planes produced by Factory K = 7 u

Factory H's toys + 2 u = 7674 --- (1)
Factory H's toys + 7 u = 13204 --- (2)

(2) - (1)
7 u - 2 u = 13204 - 7674
5 u = 5530
1 u = 5530 ÷ 5 = 1106

Number of toy planes produced by J
= 2 u
= 2 x 1106
= 2212

Number of toy planes produced by H
= 7674 - 2212
= 5462

Answer(s): 5462