Question 66

In an examination, there are 800 boys and 600 girls. 40% boys and 60% girls passed the examination. The percentage (correct to two decimal places) of failed students from the total students is:

Solution

given there are 800 boys

40%of boys passed examination

i.e; $$800\times\frac{40}{100}$$ =320 boys passed exam

Given that there are 600 girls and 60% of girls passed exam

i.e; $$600\times\frac{60}{100}$$=360 girls

total number of passed students = 360+320=680

so no of failed students= 800+600-680

=720

so percentage of failed students = $$\frac{720\ \times\ 100}{1400}$$

51.42%

hence answer is option C

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