Answer:
The new width is 20
Step-by-step explanation:
w = 45
h = 27
We want the height to be 12
We can use proportions to find the new dimensions
w w old w new
----- = ---------- = ----------
h h old h new
45 w new
---------- = ----------
27 12
Using cross products
45*12 = 27 * w new
540 = 27 w new
Divide by 27
540/27 = 27 w new/27
20 = w new
The new width is 20
