Average Practice Question and Answer
8 Q: The average salary of the entire staff in an office is Rs 3200 per month. The average salary of officers is Rs 6800 and that of non-officers is Rs 2000. If the number of officers is 5, then find the number of non-officers in the office.
504 064d5d35cebd5c374727b7ada
64d5d35cebd5c374727b7ada- 18false
- 212false
- 315true
- 45false
- 5None of thesefalse
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Answer : 3. "15"
Q: In a class, there are 30 girls and 15 boys and total average weight of class is $$47{7\over15}$$ kg. The total average weight of boys is 58 kg. Find the approximate average weight of girls.
622 064d4bbf9a798377447222ff0
64d4bbf9a798377447222ff0- 132 kgfalse
- 242 kgtrue
- 352 kgfalse
- 435 kgfalse
- 550 kgfalse
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Answer : 2. "42 kg"
Q: The number of students in section A and section B of a class are 40 and 52, respectively. The average score in mathematics of all the students is 75. If the average score of the students in A is 20% more than that of students in B. then what is the average score of students is B?
471 064c765dba4dbfb486bda39f7
64c765dba4dbfb486bda39f7- 171false
- 265false
- 369true
- 463false
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Answer : 3. "69"
Q: The average of twenty-five numbers is 54. The average of the first 13 numbers and that of the last 13 numbers is 52.8 and 62.2, respectively. If the 13th number is excluded, then what is the average of the remaining numbers (correct to one decimal place)?
394 064c7634942082e8c9b7a7fb1
64c7634942082e8c9b7a7fb1- 150.6false
- 249.8false
- 351.2false
- 450.2true
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Answer : 4. "50.2"
Q: The average score in Mathematics of 90 students of section A and B of class IX was 63. The number of students in A were 10 more than those in B. The average score of students in A was 30% more than that of students in B. The average score of students in B is:
634 064c211b9d3a6d4481eeb5cb1
64c211b9d3a6d4481eeb5cb1- 156false
- 260false
- 350false
- 454true
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Answer : 4. "54"
Q: The average of three numbers a, b and c is 2 more than c. The average of a and b is 48. If d is 10 less than c, then the average of c and d is:
486 064ba508d88d5e4f52de343a4
64ba508d88d5e4f52de343a4- 138false
- 235false
- 336false
- 440true
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Answer : 4. "40"
Q: Find the average of the following sets of numbers.
693, 456, 876, 532, 934, 691, 596, 398, 682
1563 064b4f2b0568e7ff594af0d04
64b4f2b0568e7ff594af0d04- 1550.50false
- 2750.80false
- 3650.89true
- 4725.90false
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Answer : 3. "650.89"
Q: The average weight of three men is increased by 4 kg when one of them, whose weight is 100 kg, is replaced by another man. What is the weight of the new man?
555 064abe016299b7896000b547a
64abe016299b7896000b547a- 1107 kgfalse
- 2103 kgfalse
- 3104 kgfalse
- 4112 kgtrue
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