People live for four periods. they can choose to work for all four periods, or can attend school in the first period and then work for the remaining three periods. if people do not attend school, their annual wage is $30,000 per period. if they do attend school, they earn $50,000. the cost of attending college is $28,000, the interest rate is 10 percent, and all people are identical. do people go to school or not?

People should disregard schooling and  thus work in the entire life period.

Explanation:

Condition 1--- Work throughout the 4 periods

The NPV =

= 27,272. 7 + 24,793.3 + 22,539.4 +20,490.4

= 95,095.8

Condition 2 - Attend school and work later

The NPV = -28,000 +

= -28000 + 41,322.31 + 37,565.7 + 34,150.6

=   85,038.61

Conclusion: Since the NPV of not going to school is higher, people should disregard schooling. They should work in the entire life period.

i would say iii (3) because in order to compare a price you have to use as a reference other near stores because it's its

hope i explained myself