Sneha and Gita competed in a 1 km race. Sneha completed the race in CXCVI seconds and Gita completed it in CCLXVII seconds. By how many seconds (in Roman numerals) was Sneha ahead of Gita?

Vinayak completed his homework in 46.17 minutes. Sulekha took twice as long as Vinayak to complete her homework. Kareem completed his homework 18 minutes after Sulekha. How many minutes did it take for Kareem to complete his homework?