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Answer :
Total number of students = 4320
Number of girls = 2300
Number of boys = 4320 – 2300 = 2020
(a) Ratio of number of girls to the total number of students
= \(\frac{2300}{4320} = \frac{2300÷20}{4320÷20} = \frac{115}{216} \)
= 115 : 216
(b) Ratio of number of boys to the number of girls
= \(\frac{2020}{2300} = \frac{2020÷20}{2300÷20} = \frac{101}{115} \)
= 101 : 115
(c) Ratio of number of boys to the total number of students
= \(\frac{2020}{4320} = \frac{2020÷20}{4320÷20} = \frac{101}{216} \)
= 101 : 216