If you cannot find the Lee & Seshia manual, do not panic. These resources will teach you the same concepts with better support:
"Show that the minimum time between interrupts necessary to guarantee a bounded priority inversion is N C, where N is the number of threads and C is the critical section length."* introduction to embedded systems lee seshia solution manual
Instead, I have written an that explains what the solution manual is, why students seek it, and – most importantly – legal and ethical alternatives to help you master the material. Title: Beyond the Answer Key: A Critical Review