Based on the information given regarding the comparative advantage, the number of hours will be 96 hours.
From the complete question, Gwen will write music for 0 songs because she has comparative advantage in lyrics. Paul will write music for 8 songs because he has a comparative advantage in music.
The extra time required for Paul will be:
= 12 × 2 = 24 hours.
Therefore, the total time that will be required will be:
= 72 + 24 = 96 hours.
Learn more about comparative advantage on:
https://brainly.com/question/7045530