Average Practice Question and Answer
8 Q: The average weight of 15 oarsmen in a boat is increased by 1.6 kg when one of the crews, whose weighs 42 kg is replaced by a new man. Find the weight of the new man (in kg).
1706 05f479a3809e4377de945ee30
5f479a3809e4377de945ee30- 166true
- 243false
- 367false
- 465false
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Answer : 1. "66"
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.
1687 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
1685 05feee12ad6478d50161e6c83
5feee12ad6478d50161e6c83- 135 kgfalse
- 239 kgfalse
- 340 kgtrue
- 445 kgfalse
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Answer : 3. "40 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? 1675 05d19d2be1388cd24f0860ef5
5d19d2be1388cd24f0860ef5- 14 yearsfalse
- 23 yearsfalse
- 32 yearsfalse
- 41 yearstrue
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Answer : 4. "1 years"
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? 1670 05d19dded7619fe30b9d345a3
5d19dded7619fe30b9d345a3- 130false
- 236false
- 346false
- 460true
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Answer : 4. "60"
Explanation :
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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?
1668 0605868aed2ebd403fd28aae5
605868aed2ebd403fd28aae5- 151true
- 249false
- 350false
- 446false
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Answer : 1. "51"
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.
1662 0649e7ef046047484bc7db832
649e7ef046047484bc7db832- 151false
- 252true
- 349false
- 450false
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Answer : 2. "52"
Q: The average of first three numbers is three times of the fourth number. If the average of all four numbers is 5, then find the fourth number. 1654 05d19dc981388cd24f0860f15
5d19dc981388cd24f0860f15- 14.5false
- 25false
- 32false
- 44true
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Answer : 4. "4"
Explanation :
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