The average weekly number of toy helicopters produced by Factory N and P is 3862. The average weekly number of toy helicopters produced by Factory N and Q is 6402. If Factory P produced ²₇ as many toy helicopters as Factory Q each week, how many toy helicopters does Factory N produce weekly?
Total toy helicopters that Factory N and Factory P produced
= 3862 x 2
= 7724

Total toy helicopters that Factory N and Factory Q produced
= 6402 x 2
= 12804

Number of toy helicopters produced by Factory P = 2 u
Number of toy helicopters produced by Factory Q = 7 u

Factory N's toys + 2 u = 7724 --- (1)
Factory N's toys + 7 u = 12804 --- (2)

(2) - (1)
7 u - 2 u = 12804 - 7724
5 u = 5080
1 u = 5080 ÷ 5 = 1016

Number of toy helicopters produced by P
= 2 u
= 2 x 1016
= 2032

Number of toy helicopters produced by N
= 7724 - 2032
= 5692

Answer(s): 5692