I have a doubt regarding the question that I have attached with this.

My approach was I joined Q and T, and calculated the sum of QR,RS, and ST ,which was 11.

With this we can say that QT is less than 11.

Then, I got (11-3)<PT<(11+3)

This eliminated options b,c,d and e and unfortunately the answer you gave with your analysis was C.

I dunno where I went wrong .

So I hope you can help me.

Video:Quant Misc - Difficult Geometry - GregMat .

Time around 25 mins.