US dollar ends cheaper against rupee

The US dollar ended cheaper against the rupee at Rs 64.35/36 per dollar but the pound sterling finished higher at Rs 84.05/07 per pound at the close of the Interbank Foreign Exchange market today.
Following are the Interbank Forex and RBI rates:
(In Rs Per Unit)
Unit Interbank RBI Reference US Dollar 64.35/36 US Dollar Rs.64.3666 Pound Sterling 84.05/07 Euro Rs.73.6933 Euro 73.76/78
Japanese Yen(100) 57.