Using elimination method.
1:x+y=16
x-y=0

x = 8 and y = 8

Step-by-step explanation:

Giving equations:

     x + y  = 16

     x - y = 0

Unknown:

Find the values of x and y= ?

Solution:

      x + y  = 16   (i)

      x - y = 0   (ii)

Add i and ii:

      2x  = 16

         x = 8

Subtract i and ii;

         2y = 16

            y = 8

the workers who do no drive has no reasonable reason to buy gasoline due to they don't have anything to use it for