Average Practice Question and Answer
8 Q: The average weight of a group of 20 boys was calculated to be 89.4 kg and it was later discovered that one weight was misread as 78 kg instead of 87 kg. The correct average weight is
1621 05f2a74fdcef453383f1e6311
5f2a74fdcef453383f1e6311- 189.55 kgfalse
- 289.85 kgtrue
- 388.95 kgfalse
- 489.25 kgfalse
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Answer : 2. "89.85 kg"
Q: Average age of a couple before 4 years, at the time of their marriage was 27 years. Now, the average age of the couple including their new born baby is 21 years. Find the present age of the baby? 1603 05d19d2be1388cd24f0860ef5
5d19d2be1388cd24f0860ef5- 14 yearsfalse
- 23 yearsfalse
- 32 yearsfalse
- 41 yearstrue
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Answer : 4. "1 years"
Q: The average of marks scored by the students of a class is 68. The average of marks of the girls in the class is 80 and that of the boys is 60. What is the percentage of boys in the class?
1602 05f2a5f24cef453383f1e38ad
5f2a5f24cef453383f1e38ad- 165%false
- 270%false
- 340%false
- 460%true
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Answer : 4. "60% "
Q: The average of three numbers is 40. First of them is two times of the seconds and the second is three time of the third. So, what is the difference between the largest and smallest number? 1591 05d19dded7619fe30b9d345a3
5d19dded7619fe30b9d345a3- 130false
- 236false
- 346false
- 460true
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Answer : 4. "60"
Explanation :
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Q: If the average marks obtained by Balu, Benjamin and Babur is 80 and the average marks of Benjamin and Babur is 83, find marks obtained by Balu.
1580 05eb4f8d14080050ac264c09f
5eb4f8d14080050ac264c09f- 180false
- 283false
- 390false
- 474true
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Answer : 4. "74 "
Q: A group consists of 25 men and 20 women. The average weight of men is 48 kg and that of women is 30 kg. The average weight of the group is
1580 05feee12ad6478d50161e6c83
5feee12ad6478d50161e6c83- 135 kgfalse
- 239 kgfalse
- 340 kgtrue
- 445 kgfalse
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Answer : 3. "40 kg"
Q: The average marks obtained by Saloni in four papers is 51, and in the fifth paper she gets 56 marks. Find her new average in all five papers.
1572 0649e7ef046047484bc7db832
649e7ef046047484bc7db832- 151false
- 252true
- 349false
- 450false
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Answer : 2. "52"
Q: The average of x numbers is 48. If of the numbers are increased by 51 each and remaining are decreased by 71 each, then what is the new average?
1568 0605868aed2ebd403fd28aae5
605868aed2ebd403fd28aae5- 151true
- 249false
- 350false
- 446false
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