Question

QP = 3 m, QR = 2 m and NS = 9 m. Find NO.

Answer 12 m
13.5 m
11.5 m
10.5 m

Answer 1

9/2=4.5
x/3=4.5
x=NO=13.5

Answer 2

Assuming these are similar triangles it's a question of ratios:
(9/2)(3)=x
27/2=x
x=13.5