X Owes Y the following sums of money due on the dates stated :
Rs. 400 due on 5th January, 2000
Rs. 200 due on 20th January, 2000
Rs. 800 due on 4th February, 2000
Rs. 100 due on 26th February, 2000
Rs. 50 due on 10th March, 2000
Calculate a date when payment made by in one instalment resulting in no loss of no either party
