What is Halsey Scheme ?

Suppose you decide in the morning to attempt 20 questions of costing in 5 hours.

You started study at 9AM and attempted all questions by 1 PM i.e.in just 4 hours.Now as per Halsey you can enjoy for 50% Time Saved i.e. Half-an-hour. Watch movie / listen songs / give Samosa party to yourself. (Halsey bonus scheme gives payment equal to 50% time saved as bonus)