The answer should be 25 days. If the kitten is 100 grams at birth, gains 8 grams a day and the goal weight is 300 grams, then you need to subtract 100 from 300 so you have 200. Then divide 200 by 8 grams per day which will equal 25 days.
if you pit the shape in a straight line it would be 180 degrees now take 180 take 130 and 100 and subtract those add that to the other 30 then take 180 divided by 60