Update questions.md

questions.md

@@ -322,3 +322,29 @@ write an API for client who will give date and time and API should return meetin
  - Each book and member card will have a unique barcode. The system will be able to read barcodes from books and members’ library cards.
 
 -  Design an API rate limiter.
+
+- Flipkart is starting a new vehicle rental service called FlipKar. In this service, we will rent different kinds of vehicles such as cars and bikes.
+
+	- Features:
+		Rental service have multiple branches throughout the city.
+		Each branch has limited number of different kinds of vehicles. 
+		Each vehicle can be booked with predefined price per unit time slot. For simplicity, current pricing model does not support dynamic pricing or update on prices based on seasonality.
+		Each vehicle can be booked in multiples of 1 hour time slot.
+		All bookings should be made before the start time of particular booking.
+
+	- Requirements:
+		Onboard a new branch with available vehicle.
+		Onboard new vehicle(s) of existing type to a particular branch.
+		Rent vehicle for a time slot and a vehicle type (lowest price as the default choice of selection of vehicle, this should be extendable to any other strategy). While booking a vehicle if 
+                availability is not there, then it should fallback to another available branch, which is derived based on the vehicle selection strategy.
+		A system view should be made available, such as currently booked vehicles, available vehicles of all the branches.
+
+	- Test cases: 
+		(Test-cases are defined for understanding feature requirements only. Please model it appropriately based on your service implementation)
+		add_branch(‘koramangala’, [“1 suv for Rs.12 per hour”, “3 sedan for Rs.10 per hour”, “3 bikes for Rs.20 per hour”]); 
+		add_branch(‘jayanagar’, [“3 sedan for Rs.11 per hour”, “3 bikes for Rs.30 per hour”, “4 hatchback for Rs.8 per hour”]);
+		add_branch(‘malleshwaram’, [“1 suv for Rs.11 per hour”, “10 bikes for Rs.3 per hour” , “3 sedan for Rs.10 per hour”]);
+		add_vehicle(‘koramangala’, “1 sedan”); //add 1 sedan to koramangala
+		rent_vehicle(‘suv’, 20th Feb 10:00 AM, 20th Feb 12:00 PM); // should book from malleshwaram.
+		rent_vehicle(‘suv’, 20th Feb 10:00 AM, 20th Feb 12:00 PM); // should book from koramangala.
+		rent_vehicle(‘suv’, 20th Feb 10:00 AM, 20th Feb 12:00 PM); //Should fail saying no vehicle.