An electrical contractor as a job which should be completed in 100 days. At present,

he has 80 men on the job and it is estimated that they will finish the work in 130

days. If of the 80 men, 50 are paid P62 a day, 25 at P68 a day, and 5 at P75 a day

and if for each day beyond the original 100 days, the contractor has to pay P250

liquidated damages:

(a) How many more men should the contractor add so he can complete the work

on time?

(b) If the additional men of 5 are paid P68 a day and the rest at P62 a day, would

the contractor save money by employing more men and not paying the fine?