In a class of 1500 students, the percentage of girls is 30%. If 80% of the boys failed the examination, find the number of boys who passed in the examination.
Answer & explanation
Correct answer: option 2
70% = \(\frac{7}{10}\) & 20% = \(\frac{1}{5}\)
Number of boys = 70% of 1500
= \(\frac{7}{10}\) × 1500 = 1050
As , 80% of boys failed the examination
Number of Passed boys = 20% of 1050
= \(\frac{1}{5}\) × 1050
= 210