Answer:
Option A
Explanation:
Number of lecturers in various subjects are:
Chemistry → $\left(\frac{13}{100}\times1600\right)$ = 208
Education → $\left(\frac{18}{100}\times1600\right)$ = 288
Hindi → $\left(\frac{12}{100}\times1600\right)$ = 192
Mathematics → $\left(\frac{21}{100}\times1600\right)$ = 336
Physics → $\left(\frac{14}{100}\times1600\right)$ = 224
Zoology → $\left(\frac{22}{100}\times1600\right)$ = 352
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Subjects
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Number of Males
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Number of Females
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Chemistry
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$\left(\frac{1}{8}\times208\right)$ = 26
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(208-26) = 182
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Education
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$\left(\frac{5}{8}\times288\right)$ = 180
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(288-180) = 108
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Hindi
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$\left(\frac{1}{4}\times192\right)$ = 48
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(192-48) = 144
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Mathematics
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$\left(\frac{3}{7}\times336\right)$ = 144
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(336-144) = 192
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Physics
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$\left(\frac{9}{14}\times224\right)$ = 144
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(224-144) = 80
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Zoology
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$\left(\frac{7}{16}\times352\right)$ = 154
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(352-154) = 198
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Required ratio = 80 :144 = 5 : 9.
