A student scores 64% marks in 6 papers of 150 marks each. He scores 25% of his total obtained marks in Hindi and English together.

Let H be the set of people who speak Hindi, and E be the set of people who speak English ∴ n(H ∪ E) = 400, n(H) = 250, n(E) =...

Let U be the set of all students in the group. Let E be the set of all students who know English. Let H be the set of all students who know...

(e) Percentage of marks obtained by Harish =421/678 x 100 = 62.4 = 62

(b) Difference = 270 - 216 = 54 According to the question, 8% of total aggregate marks = 54 Total aggregate marks = 54 x 100/8 = 675

(e) According to the question, (40 – 4)% of x = 261 Max marks = 261/36 x 100 = 725

(e) Required approximate percentage =654 x 100/950% = 68.84% = 69%

(a) Let the maximum marks be x (265+55) = 40x/100 or 320 x 100= 40x x= 320 x 100/40 = 800

(e) Let the maximum marks be x According to the question, 35x /100 +42 =336 x = 840 

(d) Marks scored by Mathew = 42 + 51 + 58 + 35 +48 = 234 Max.Marks = 60 × 5 = 300 Percentage scored = 234 /300 x 100 = 78%

(b) Total marks = 500 Marks scored by Vikram = 500 × 72% = 360 Marks scored in Science = 360 – [80 + 70 + 76 + 65] = 69