In addition to her salary, ms. lopez earns a 3% commission, or fee based on a percent of her sales, on every vacation package that she sells. one day, she sold three vacation packages shown. fill in the table for each packages' commission. what was her total commission?

package 1 commission: _

package 2 commission: _

package 3 commission: _

total commission: _

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