The National Amusement Park operates as a tourist attraction in India. The company adjusts its accounts at the end of each month. The selected accounts appearing below reflect balances after adjusting entries were prepared on June 30. The adjusted trial balance shows the following:

                        Prepaid Rent                                                            $  17,000

                        Buildings                                                                      42,000

                        Accumulated Depreciation—Buildings                        8,250

                        Unearned Ticket Revenue                                                600

Other data:

1. Three months' rent had been prepaid on June 1.
2. The buildings are being depreciated at $9,000 per year.
3. The unearned ticket revenue represents tickets sold for future park visits. The tickets were sold at $4.00 each on June 1. During June, twenty of the tickets were used by customers.

 Instructions:

(a)     Calculate the following:

1. Monthly rent expense.
2. The age of the fencing in months.
3. The number of tickets sold on June 1.

(b)     Prepare the adjusting entries that were made by the National Amusement Park on June 30.