In a hostel there were 100 students. To accommodate 20 more students the average is decreased by rupees 5. But total expenditure increased by Rs.400. Find the total expenditure of the hostel now?

Related Mcqs:

1. The average mark of the students of a class in a particular exam is 80. If 5 students whose average mark in that exam is 40 are excluded, the average mark of the remaining will be 90. Find the number of students who wrote the exam.

   A. 20
   B. 15
   C. 25
   D. 35

2. The average of 35 students in a class is 16 years. The average age of 21 students is 14. What is the average age of remaining 14 students?

   A. 15 years
   B. 17 years
   C. 18 years
   D. 19 years

3. 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

4. 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

5. The average age of 15 students of a class is 15 years. Out of these, the average age of 5 students is 14 years and that of the other 9 students is 16 years. The age of the 15th student is____________?

   A. 11 years
   B. 14 years
   C. 15 years
   D. 15 2/7 years

6. What is the ratio of Faheem’s salary to Imran’s salary to Naveed’s salary if Faheem makes 80,000 rupees ,Imran 70,000 rupees and Naveed makes 50,000 rupees ?

   A. 80:70:60
   B. 8:7:5
   C. 4:7:5
   D. 7:8:5

   Submitted by: Faheem Zaman Dhaunroo

7. Out of 100 students, 50 failed in English and 30 in Mathematics. If 12 students fail in both English and Mathematics. Then the number of students who passed in both the subjects is__________?

   A. 26
   B. 28
   C. 30
   D. 32

8. If the average marks of three batches of 55, 60 and 45 students respectively is 50, 55, 60, then the average marks of all the students is__________?

   A. 53.33
   B. 54.68
   C. 55
   D. None of these

9. The average weight of 25 persons sitting in a boat had some value. A new person added to them whose weight was 46 kg only. Due to his arrival, the average weight of all the persons decreased by 5 kg. Find the average weight of first 25 persons?

   A. 55 kg
   B. 62 kg
   C. 56 kg
   D. None

10. If the average marks of three batches of 55, 60 and 45 students respectively is 50, 55, 60, then the average marks of all the students is:

    A. 53.33
    B. 54.68
    C. 55
    D. None of these