Which solution is right for this question? I think both of the solutions make sense
I did the phasor analysis myself (shown below) and obtained 3.75W. Sometimes books have mistakes in them. All the author has to do is accidentally write a 2 instead of 7 in the ten’s decimal place and have editor not acknowledge the mistake. When I was in school my differential equations book had mistakes in it that the professor has to correct!

Unfortunately I am unable to rotate image.