Question

in an examination 40% students passed in math only, 30% passed in Science only, and 10% students failed in both the subjects .if 400 students passed in Science find the total number of students by drawing a Venn diagram.​

Answer 1

40% of the student is 160

30% of the students is 120

10% of the students is 40

the remain is ___

160 + 120 + 40= 320

400 -320 = 80

meaning 160 students passes only math (40%). 120 students passed on science (30%). 40 students fail both subjects (10%) and 80 students passes both subjects (20%)