Question

Ques. In an examination, 70% of students passed in physics, 65% in chemistry, 27% failed in both subjects. The percentage of students who passed is:

Answer 1

Answer:

62%

Step-by-step explanation:

70% students passed in physics

=> 30% failed in physics

Since 27% failed in both subjects, those who failed only in physics

= 30 - 27

= 3%...........(i)

65% students passed in chemistry

=> 35% students failed in chemistry

Since 27% failed in both subjects, those who failed only in chemistry

= 35 - 27

= 8%.................(ii)

=> Percentage of all students who failed = 3% + 8% + 27%

                                                                    = 38%

=> Percentage of students who passed = 100% - 38%

                                                                  = 62%