Answer:
10 in
Step-by-step explanation:
Old proportions:
2 x 3
New proportions
h x 15
Assuming the painting has been increased by a constant scale factor.
Where x is the unknown scale factor, and h is the height after it has been enlarged.
[tex]3 * x = 15\\2 * x = h[/tex]
Rearrange second equation:
[tex]3 * x = 15\\x =\frac{h}{2}[/tex]
Substitute:
[tex]3*\frac{h}{2} =15\\\frac{h}{2}=5\\h=10[/tex]
