Question 1184563
day 1 ate 420(2/5)=168 gm so 252 gm left.
day 2 ate 1/3 of that or 84 gm so have 168 gm left
day 3 ate 41 gm so 127 gm left.
First and third lines are the answers.
I am assuming on the second day ate 1/3 of the remaining food, not 1/3 of the original amount.