Arnav mowed one half of his lawn and Benji mowed one third of the same lawn, each at a constant rate. If Arnav, continuing at the same rate, finished mowing the rest of the lawn in 12 minutes, how many minutes would it have taken him to mow the entire lawn by himself?

Step-by-step explanation:

18 minutes that is if he mowed half and the remaining in which benji didn't touch

Step-by-step explanation:

If Arnav mowed 1/2 and benji mowed 1/3 there's going to be 1/6 of the land remaining which arnav also mowed on his own which adds to the 1/2 he mowed so in total he actually mowed 2/3 so if 2/3 took him 12 minutes use ratio and proportion to calculate for the full land

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