Kevin drove his car to a concert. his car can go 400 miles with a full tank of gas. he used 30% of the full tank of gas to get to the concert while traveling 60 miles per hour

It takes him 2 Hours to reach the concert.

Step-by-step explanation:

Given the car can travel 400 miles with a full tank of gas.

It used 30% of the full tank of the gas to get to the concert. Which means it travelled =120 miles.

Also given that kevin travels at 60 miles per hour

That means it takes him one hour to travel 60 miles.

Now to travel 120 miles it takes him 2hours .

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