Question

Math is not my strong point..

Answers:
20in
16in
18in

Would also appreciate an explanation if possible, so I can understand myself. But it’s alright if it’s not provided.

Answer 1

The answer is going to be 16in

Answer 2

Answer: 16 in

Step-by-step explanation:

PQ/QR = PT/TS

PQ/4 = 12/3
PQ x 3 = 12 x 4 (cross multiply)
PQ x 3 = 48
PQ = 48/3
PQ = 16