US dollar rallies against rupee

The US dollar rallied against the rupee at 64.23/24 per dollar and the pound sterling also finished sharply higher at Rs 97.83/85 per pound at he 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 64.23/24 US Dollar Rs. 63.8800 Pound Sterling 97.83/85 Euro Rs. 72.5102 Euro 72.82/84
Japanese Yen(100) 53.92/94.