hi there,
The Indian currency is called the rupee(Rs), $10 is around 500Rs. There ATM's in most towns and
cities in India but do carry cash or travellers cheques as backup.
The most commonly accepted cards in
India are Visa, MasterCard, Cirrus, Maestro and Plus. Also, if you want to reduce exchange charges, make larger transactions less often.
Hope this helps
Vacationbuddy