1. Present Worth ($) Annual Worth ($) Future Worth (S) 100,000 [x] 259,370 First Cost, $ Maintenance and Operating Costs, $ Benefits, $ 61,446 10,000 159,374 [y] 30,722 40,000 5,000 637,496 [z] Disbenefits, $ For the table given above, calculate the followings at i = 10%. a) (10 Points) Find the useful life n. b) (10 Points) Fill in all the missing values (x, y and z) in the table. ) (10 Points) Use AW method to calculate the conventional B/C ratio. Provide a practical interpretation of this ratio