Respuesta :
Answer: Option 'a' is correct.
Step-by-step explanation:
Since we have given that
Mark currently works part time with a salary of $8000.
And he planned to quit working and attend college for 4 years.
Total cost of college = $64000
Salary of his after graduating = $32000
so, Number of years he will take to recover his investment is given by
[tex]\dfrac{64000}{32000}\\\\=2\ years[/tex]
Hence, Option 'a' is correct.