Explanation:

Credit revenue from operations Rs 3,00,000. Trade Receivables Turnover Ratio 5; Calculate Closing Debtors, if closing debtors are two times in comparison to Opening Debtors.

TRADE RECEIVABLE TURNOVER RATIO = credit revenue from operations  = 5 times

                                                                          average trade receivables

                                                                     =                Rs 3,00,000              = 5 times

                                                                           average trade receivables

                         average trade receivables  = Rs. 3,00,000

                                                                               5

                                                                   = Rs. 60,000

Let opening trade receivable = X

Let closing trade receivable = 2X

average trade receivables= opening trade receivable + closing trade receivable 

                                                                                     2 

                                           =    X + 2X = Rs. 60,000

                                                    2

                                     3X = Rs. 1,20,000

                                       X =  Rs. 1,20,000

                                                         3 

opening trade receivable (X) = Rs. 40,000

closing trade receivable (twice of x) = Rs. 40,000 * 2 = Rs. 80,000