On december 31, there were 40 units remaining in ending inventory. these 40 units consisted of 5 from january, 6 from february, 10 from may, 4 from september, and 15 from november. using the specific identification method, what is the cost of the ending inventory?

the answer is 28

step-by-step explanation:

i would have to say it is c.

solution:

→c= a b , that is product of a and b is possible only when when a is m × n matrix and b is n × p matrix.

that is, number of columns of a= number of rows of b.

so, size of matrix , c= a b is , if a = (m × n)matrix

b= (n × p)matrix

then a b = [ (m × n)matrix] ×[   (n × p)matrix ]

→→c= a b= [m × p ] matrix

→→size of product a b will be equal to = number of rows of a × number of columns of b