An electronic firm produces 3 types of tablets (A, B, and C) in 3 factories (F1, F2, F3). The quantities produced per month are in the following table:
Factory 1 (F1) Factory 2 (F2) Factory 3 (F3)
Tablet A 30 40 15
Tablet B 20 5 5
Tablet C 3 4 10

Let us say, Q= (30 40 15 20 5 5 3 4 10)

The cost per unit is A=€40, B=€50, and C=€35. Let us say, C= (40 50 35)
a. (In the Excel file, with Excel formulas) [0.5 points] Find QC (the multiplication of Q by C), does it make sense in economic terms?
b. (In the Excel file, with Excel formulas) [0.25 points] Find QT, the transpose of Q.
c. (In the Excel file, with Excel formulas) [0.5 points] Find QTC (the multiplication of Q¹ by C). Interpret the result in economic terms.