Tony and sahar go to the store to buy some food. they get lemonade for $3, tomatoes for $4, bread for $6 and cheese for $5. if they decide to split the cost evenly, how much does each person spend?

If you add all of it up it equals 18 then you divide it by 2 since there's two people. So I'm guessing $9 each?

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