Answer:
a) 0.843 years
b) 1.785 years
Explanation:
See attached pictures for detailed explanation.
Nope, he is a BOT not a MOD. He is made to run for this purpose only. He used to give answers in brainly.in but now he is used for deleting useless answers and questions, to welcome a new user and acts as a server bot.
You can also call "TheBrain" as AI