I am also struggling with question 8.
I understand that the voltage drops will equal the sum of the voltage supply. IE the voltage drops across each branch will equal 120 volts. This led me to believe that the voltage drop across load 1 and 3 were both 120 volts because they are the only loads on their respective branches. This would leave the voltage drop across loads 2 and 4 to be 60 volts each, because they share the same branch. But I received a 50% for this question. Where am I going wrong in my thinking?