Quant Exam > Quant Questions > 3 years ago, the average of a family of 5 mem...
Start Learning for Free
3 years ago, the average of a family of 5 members was 17 years. A baby having been born, the average age of the family is the same today. The present age of the baby is:
- a)5 years
- b)2 years
- c)1 year
- d)4 years
- e)None of these
Correct answer is option 'B'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Verified Answer
3 years ago, the average of a family of 5 members was 17 years. A baby...
Answer – B (2 years) Explanation – Total age of 5 members, 3 years ago = (17 x 5) years = 85 years Total age of 5 members now = (85 + 3 x 5) years = 100 years Total age of 6 members now = (17 x 6) years = 102 years Age of the baby = (102 – 100) years = 2 years
Most Upvoted Answer
3 years ago, the average of a family of 5 members was 17 years. A baby...
At the time 3 years ago
avg of 17 years was for 5 people in a family , so by formula 》mean= sum of obsv/no. of obsv
so here
mean =17,
sum of obsv = x,
no. of obsv = 5,
>> 17=x/5
x= 85 ( this is the sum of ages of all 5
people)
*now at time 3 years later
the increase in age of each of the 5 members will be three and there will be addition of age of new born baby, let it be (z).
Here no. of obsv increases to 6 .
But average remains same i.e. 17
so here ,
mean =17,
sum of obsv = (85+(3*5)) + z,
no. of obsv = 6,
>> 17 = (85+15+z)/6
17*6 = 100 +z
102 = 100+ z
z = 102 - 100
z = 2 yrs
I hope this helps ^_^
avg of 17 years was for 5 people in a family , so by formula 》mean= sum of obsv/no. of obsv
so here
mean =17,
sum of obsv = x,
no. of obsv = 5,
>> 17=x/5
x= 85 ( this is the sum of ages of all 5
people)
*now at time 3 years later
the increase in age of each of the 5 members will be three and there will be addition of age of new born baby, let it be (z).
Here no. of obsv increases to 6 .
But average remains same i.e. 17
so here ,
mean =17,
sum of obsv = (85+(3*5)) + z,
no. of obsv = 6,
>> 17 = (85+15+z)/6
17*6 = 100 +z
102 = 100+ z
z = 102 - 100
z = 2 yrs
I hope this helps ^_^
|
Explore Courses for Quant exam
|
|
Similar Quant Doubts
3 years ago, the average of a family of 5 members was 17 years. A baby having been born, the average age of the family is the same today. The present age of the baby is:a)5 yearsb)2 yearsc)1 yeard)4 yearse)None of theseCorrect answer is option 'B'. Can you explain this answer?
Question Description
3 years ago, the average of a family of 5 members was 17 years. A baby having been born, the average age of the family is the same today. The present age of the baby is:a)5 yearsb)2 yearsc)1 yeard)4 yearse)None of theseCorrect answer is option 'B'. Can you explain this answer? for Quant 2024 is part of Quant preparation. The Question and answers have been prepared according to the Quant exam syllabus. Information about 3 years ago, the average of a family of 5 members was 17 years. A baby having been born, the average age of the family is the same today. The present age of the baby is:a)5 yearsb)2 yearsc)1 yeard)4 yearse)None of theseCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Quant 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for 3 years ago, the average of a family of 5 members was 17 years. A baby having been born, the average age of the family is the same today. The present age of the baby is:a)5 yearsb)2 yearsc)1 yeard)4 yearse)None of theseCorrect answer is option 'B'. Can you explain this answer?.
3 years ago, the average of a family of 5 members was 17 years. A baby having been born, the average age of the family is the same today. The present age of the baby is:a)5 yearsb)2 yearsc)1 yeard)4 yearse)None of theseCorrect answer is option 'B'. Can you explain this answer? for Quant 2024 is part of Quant preparation. The Question and answers have been prepared according to the Quant exam syllabus. Information about 3 years ago, the average of a family of 5 members was 17 years. A baby having been born, the average age of the family is the same today. The present age of the baby is:a)5 yearsb)2 yearsc)1 yeard)4 yearse)None of theseCorrect answer is option 'B'. Can you explain this answer? covers all topics & solutions for Quant 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for 3 years ago, the average of a family of 5 members was 17 years. A baby having been born, the average age of the family is the same today. The present age of the baby is:a)5 yearsb)2 yearsc)1 yeard)4 yearse)None of theseCorrect answer is option 'B'. Can you explain this answer?.
Solutions for 3 years ago, the average of a family of 5 members was 17 years. A baby having been born, the average age of the family is the same today. The present age of the baby is:a)5 yearsb)2 yearsc)1 yeard)4 yearse)None of theseCorrect answer is option 'B'. Can you explain this answer? in English & in Hindi are available as part of our courses for Quant.
Download more important topics, notes, lectures and mock test series for Quant Exam by signing up for free.
Here you can find the meaning of 3 years ago, the average of a family of 5 members was 17 years. A baby having been born, the average age of the family is the same today. The present age of the baby is:a)5 yearsb)2 yearsc)1 yeard)4 yearse)None of theseCorrect answer is option 'B'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
3 years ago, the average of a family of 5 members was 17 years. A baby having been born, the average age of the family is the same today. The present age of the baby is:a)5 yearsb)2 yearsc)1 yeard)4 yearse)None of theseCorrect answer is option 'B'. Can you explain this answer?, a detailed solution for 3 years ago, the average of a family of 5 members was 17 years. A baby having been born, the average age of the family is the same today. The present age of the baby is:a)5 yearsb)2 yearsc)1 yeard)4 yearse)None of theseCorrect answer is option 'B'. Can you explain this answer? has been provided alongside types of 3 years ago, the average of a family of 5 members was 17 years. A baby having been born, the average age of the family is the same today. The present age of the baby is:a)5 yearsb)2 yearsc)1 yeard)4 yearse)None of theseCorrect answer is option 'B'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice 3 years ago, the average of a family of 5 members was 17 years. A baby having been born, the average age of the family is the same today. The present age of the baby is:a)5 yearsb)2 yearsc)1 yeard)4 yearse)None of theseCorrect answer is option 'B'. Can you explain this answer? tests, examples and also practice Quant tests.
|
|
Explore Courses for Quant exam
|
|
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup