Answer:
Each of them is going to work for 96 hours or 4 days.
Explanation:
PPFs (72 hours) Music (M) Lyrics (L)
Christine 8 9
Paul 6 4
Christine can write the music the one song in 9 hours and the lyrics in 8 hours.
Paul can write the music the one song in 12 hours and the lyrics in 18 hours.
Paul's opportunity cost of music per lyrics = 12/18 = 2/3, and the opportunity cost of lyrics per music = 6/4 = 3/2
Christine's opportunity cost of lyrics per music = 8/9, and the opportunity cost of music per lyrics = 9/8
Paul should specialize in writing music because his opportunity cost is lower, it will take him 12 x 8 = 96 hours to write down the music for 8 songs.
Christine should be in charge of writing lyrics (lower opportunity cost), it will take her 8 x 12 = 96 hours.
Each of them is going to work for 96 hours or 4 days.
b. communities in an effort to beautify local neighborhoods
c. organizations committed to the environment
d. nature that benefit mankind
suppliers.
customers.
managers.
investors.