Ethan writes the ratio x/8=y/16 to help him reduce the size of a two-dimensional shape. If the new value of y is 3 units, what will be the value of x ?(

6 units

To find the value of x when y is 3 units, we can set up a proportion:

x/8 = 3/16

Cross multiply to solve for x:

16x = 24

Divide by 16 on both sides:

x = 24/16

x = 6 units

Therefore, the value of x is 6 units when y is 3 units.