A) 23%
B) 20%
C) 32%
D) 22%
Correct Answer: D
Solution :
[d] Let the maximum marks in the examination = x According to question, 20% of x + 5 = 30% of \[x20\] \[\Rightarrow \] \[\frac{x}{5}+5=\frac{3x}{10}-20\] \[\Rightarrow \] \[\frac{3x}{10}-\frac{x}{5}=25\] \[\Rightarrow \] \[\frac{x}{10}=25\] \[\Rightarrow \] \[x=250\] Passing marks = 20% of \[250+5=\frac{20}{100}\times 250+5=55\] \[\therefore \] % passing marks \[=\left( \frac{55}{250}\times 100 \right)%=22%\]You need to login to perform this action.
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