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.
Question 58
What is the difference between the number of students who were present in Physics and Biology examination from school N?
Solution
Difference of students in Physics and Biology in N=Â $$\frac{60830}{0.35}\times0.65\times\left(0.58-0.42\right)=18075\ .$$
