US dollar ends flat against rupee

The US dollar ended flat against the rupee at Rs 64.45/46 per dollar and the pound sterling finished higher at Rs 83.62/64 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 64.45/46 US Dollar Rs.64.4539 Pound Sterling 83.62/64 Euro Rs.73.5677 Euro 73.57/59
Japanese Yen(100) 56.