1.You have been recently been hired by ABC Landscaping, and for your first assignment, you are to determine which project the company should accept out of two possibilities. You have been provided the following cash flows.

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

ratio is 2 : 9

the answer is three

13.5 : 3