Answer:
9.52% ( to 2 dec. places )
Step-by-step explanation:
Calculate the percentage increase using
percent increase = × 100%
increase = 46 - 42 = 4, hence
percent increase = × 100% ≠ 9.52%
The two grades that have a proportional relationship between the numbers of girls and boys are and grade 6 and 8
Girls: Boys
9 : 12 (grade 6)
15 : 20 (grade 8)
3 : 4
180 degree
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