The table given below shows the number of students who were absent and percentage of students who were present in the given two examinations from five different schools. The table also shows the percentage of students who were present in the Biology and Physics examination respectively.
What are the total number of students who were present in the Biology examination from all the schools together?
Solution
Biology Students :
K= $$\frac{83300}{0.35}\times0.65\times0.32=45696\ .$$
L = $$\frac{101520}{0.40}\times0.6\times0.29=44161$$
M= $$\frac{113520}{0.60}\times0.4\times0.30=22704\ .$$
N= $$\frac{60830}{0.35}\times0.65\times0.42=47447\ .$$
O= $$\frac{24003}{0.45}\times0.55\times0.25=7334\ .$$
So, Total students in Biology = 167342 .
E is correct choice.
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