The average weekly number of robots produced by Factory F and G is 3320. The average weekly number of robots produced by Factory F and H is 6809. If Factory G produced ²₅ as many robots as Factory H each week, how many robots does Factory F produce weekly?
Total robots that Factory F and Factory G produced
= 3320 x 2
= 6640

Total robots that Factory F and Factory H produced
= 6809 x 2
= 13618

Number of robots produced by Factory G = 2 u
Number of robots produced by Factory H = 5 u

Factory F's toys + 2 u = 6640 --- (1)
Factory F's toys + 5 u = 13618 --- (2)

(2) - (1)
5 u - 2 u = 13618 - 6640
3 u = 6978
1 u = 6978 ÷ 3 = 2326

Number of robots produced by G
= 2 u
= 2 x 2326
= 4652

Number of robots produced by F
= 6640 - 4652
= 1988

Answer(s): 1988