Im pretty sure the answer is 80%.
I hope this helps I got it from my math book, Rational numbers are used everyday. Write three instances in which you use each representation of a rational number--fractions, decimals,and percentages-- in your daily activities. Does a certain representation appear to be used most often?
3h - 8h + 10 = 10 - 5h
-5h + 10 = 10 - 5h
infinitely many solutions
Isaiah would have to put 10 one-hundred gram weights to balance it out because there are 1000 grams in a kilogram.