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In a school, $$\frac{5}{{12}}$$ of the number of students are girls and the rest are boys. $$\frac{4}{7}$$ of the number of boys are below 14 years of age, and $$\frac{2}{5}$$ of the number of girls are 14 years or above 14 years of age. If the number of students below 14 years of age is 1120, then the total number of students in the school is:
Answer & Solution
Correct Answer:
Option
D
Let total student = 12 unit
B : G
7 : 5
B → $$\frac{4}{7}$$ (14 year less)
B = 4 (14 year less)
G → $$\frac{2}{5}$$
G = 3 (14 year less)
Total student less than 14 year = 4 + 3 = 7
7 → 1120
1 → 160
12 → 1920 total student
B : G
7 : 5
B → $$\frac{4}{7}$$ (14 year less)
B = 4 (14 year less)
G → $$\frac{2}{5}$$
G = 3 (14 year less)
Total student less than 14 year = 4 + 3 = 7
7 → 1120
1 → 160
12 → 1920 total student
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