Ethan writes the ratio x/10 = y/20 to help him reduce the size of a two-dimensional shape. If the new value of y is 7 units, what will be the value of x?
To find the value of x, we can set up a proportion with the new value of y and solve for x.
x/10 = 7/20
Cross multiply:
20x = 70
Divide by 20 to isolate x:
x = 70/20
x = 3.5 units
Therefore, the value of x will be 3.5 units.