A contractor has 50 men of the same capacity at work on a job. They can complete the job in 30 days, but the contract expired in 20 days.

A contractor has 50 men of the same capacity at work on a job. They can complete the job in 30 days, but the contract expired in 20 days. He decides to put 20 additional men. If all the men get P600/day for a full or part day and if the liquidated damages are P50,000 for every full or part of the day he requires over his contract time. How much money he saves or loss by putting 20 additional men?