Answer :
Hi.... Your answer is below...
[tex]90\textless -30p+15\quad \text{or}\quad 30p\textless 15-90\rightarrow\\ 30p\textless-75\rightarrow p\textless -\dfrac{75}{30}\quad \text{simplifying}\quad \boxed{p\textless -\dfrac{5}{2}}[/tex]
Thanks...
[tex]90\textless -30p+15\quad \text{or}\quad 30p\textless 15-90\rightarrow\\ 30p\textless-75\rightarrow p\textless -\dfrac{75}{30}\quad \text{simplifying}\quad \boxed{p\textless -\dfrac{5}{2}}[/tex]
Thanks...