Cooperatives - table

There are 3 cooperatives and privately owned farmers in the district. The table shows the wheat yields per hectare in t/ha and their areas in hectares in 4 entities. What was the average wheat yield in the district?

subjectyield [t/ha] area [ha]
ZD1 4.9 640
ZD2 5.2 560
ZD3 4.8 1100
private 5.4 400


Correct answer:

a =  4.9956 t/ha

Step-by-step explanation:

S1=640 ha S2=560 ha S3=1100 ha S4=400 ha  m=4.9 S1+5.2 S2+4.8 S3+5.4 S4=4.9 640+5.2 560+4.8 1100+5.4 400=13488 t  a=S1+S2+S3+S4m=640+560+1100+40013488=4.9956 t/ha



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