Question

I am having a rlly hard time with this problem. I know that it isn't 12, 14, or 15. Thanks so much!

Answer 1

Hi,

Explanation:

we consider the homothety which applies S to Q, T to P, B to A, W to V with ratio 12/20=3/5 and center U

`(WU)/(UV)=(3)/(5) \\\\WV=20\\\\(20-UV)/(UV) =(3)/(5)\\\\100-5UV=3UV\\\\8UV=100\\\\\boxed{UV=(100)/(8) =12.5}\\`