If you get stuck, look at the first two steps to see which formula was used, then try to finish the rest alone.
To help you find the exact chapter or problem help you need: Which of the Das textbook are you using? Do you need help with a specific problem number ? advanced soil mechanics solution manual by das pdf.41
For official instructor access to the solution manual, it is recommended to contact the publisher through their Routledge / CRC Press Advanced Soil Mechanics – Braja M. Das – 4th Edition If you get stuck, look at the first