The average weekly number of robots produced by Factory N and P is 3683. The average weekly number of robots produced by Factory N and Q is 6617. If Factory P produced ²₅ as many robots as Factory Q each week, how many robots does Factory N produce weekly?
Total robots that Factory N and Factory P produced
= 3683 x 2
= 7366

Total robots that Factory N and Factory Q produced
= 6617 x 2
= 13234

Number of robots produced by Factory P = 2 u
Number of robots produced by Factory Q = 5 u

Factory N's toys + 2 u = 7366 --- (1)
Factory N's toys + 5 u = 13234 --- (2)

(2) - (1)
5 u - 2 u = 13234 - 7366
3 u = 5868
1 u = 5868 ÷ 3 = 1956

Number of robots produced by P
= 2 u
= 2 x 1956
= 3912

Number of robots produced by N
= 7366 - 3912
= 3454

Answer(s): 3454