A shopkeeper rents out books and charges a fixed amount for the first two days plus an extra fee for each additional day. Pranav pays \(₹22\) for keeping a book for \(6\) days, while Vinoth pays \(₹16\) for keeping the same book for \(4\) days. Determine the fixed charge and the daily extra charge.
 
Answer:
 
The fixed charge is \(Rs.\).
 
The charge for each extra day is \(Rs.\).