Need a screenshot of a page from Edexcel Stats + Mech A level Year 2

I'm stuck on example 6 part b but I don't have the worked answer and can't find it online! any help?

Which chapter?

Seven, I think! Our school's mixed up year 1 & 2 into a booklet.

I'm looking for example 6 in chapter 7 of book 2 I think. It's about a box of mass 10kg on a plane inclined 20 degrees, and question b is to find the max possible value of P. I appreciate your offer, but don't try too hard to find it - I'll just post the full question on here and hopefully find someone to guide me

I think that's what I posted in post #4.