Two triangles are known to be similar if the ratio of the similar sides and angles are equal. The value of n, if the two triangles are similar is 3.75
What are similar triangles?
Two triangles are known to be similar if the ratio of the similar sides and angles are equal.
From the given triangles, we have the following
Scale factor = 3/n
Determine the ratio of the sides
Ratio = 12/15 = 3/n
Cross multiply
12n = 15 * 3
12n = 45
n = 3.75
Hence the value of n, if the two triangles are similar is 3.75
Learn more on similar triangles here: https://brainly.com/question/2644832