Iliana's math grade increased by 21 which is 32.31%. Fiona's math grade increased by 10 which is 14.29%. To obtain the difference between the percent increases, subtract 14.29 from 32.31. Thus, the difference in percent increases of their math grades is approximately 18%.
Yes, because you are combining the sentences: Equilateral triangles have equal sides. Equilateral triangles have equal angles. Correct me if I'm wrong. :)
