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Answer:
9:19
Step-by-step explanation:
Total number of students = 28
Number of boys = 19
Number of girls = Total number of students - Number of boys = 28-19 = 9
Therefore, ratio of girls to boys = Number of girls/Number of boys = 9/19 = 9:19
The answer is 4.5 × 10 -8
9r
Explanation:
4r + 9r = 13r
13r-11r = 2r
2r + 7r = 9r
