A pupil’s marks were wrongly entered as 83 instead of 63. Due to the average marks for the class got increased by half. The number of pupils in the class is___________?

Related Mcqs:

1. The average height of 50 pupils in a class is 150 cm. Five of them whose height is 146 cm, leave the class and five others whose average height is 156 cm, join. The new average height of the pupils of the class (in cm) is __________ .

   A. 149
   B. 151
   C. 152
   D. 153

2. 40% of Raees marks is equal to 20% of Rahim’s marks which percent is equal to 30% of Rehman’s marks. If Rehman’s marks is 80, then find the average marks of Raees and Rahim?

   A. 60
   B. 70
   C. 80
   D. 90
   E. None of these

3. A candidate who gets 30% of the marks fails by 50 marks. But another candidate who gets 45% marks gets 25 marks more than necessary for passing. Find the number of marks for passing?

   A. 150
   B. 200
   C. 250
   D. 275

4. A student who secures 20 % marks in an examination fails by 30 marks. Another student who secures 32 % marks gets 42 marks more than those required to pass. The percentage of marks required to pass is:________?

   A. 20%
   B. 25 %
   C. 28%
   D. 30%

5. The average marks of a class of 30 students is 40 and that of another class of 50 students is 60. Find the average marks of all the students?

   A. 50
   B. 47.5
   C. 59
   D. 52.5

6. The average marks in mathematics scored by the students of a school at the public examination were 39. If four of these students who actually scored 5, 12, 15 and 19 marks at the examination had not been sent up, the average marks for the school would have been 44. Find the number of students sent up for examination from the school?

   A. 20
   B. 25
   C. 30
   D. 32

7. A student scored an average of 80 marks in 3 subjects: Physics, Chemistry and Mathematics. If the average marks in Physics and Mathematics is 90 and that in Physics and Chemistry is 70, what are the marks in Physics?

   A. 60
   B. 64
   C. 72
   D. 80

8. In an examination a pupil’s average marks were 63 per paper. If he had obtained 20 more marks for his Geography paper and 2 more marks for his History paper, his average per paper would have been 65. How many papers were there in the examination?

   A. 8
   B. 9
   C. 10
   D. 11

9. An engineering student has to secure 36% marks to pass. He gets 130 marks and fails by 14 marks. The maximum No. of marks obtained by him is_________?

   A. 300
   B. 400
   C. 350
   D. 500

10. The average of the marks of 12 students in a class is 36. If the marks of each student are doubled, find the new average?

    A. 72
    B. 45
    C. 37
    D. 79