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Swetha Nair

· started a discussion

· 1 Months ago

error in the solution (Question: 83318.0 )

17*5 =85
but in the solution its 55

Question:

3 years ago the average age 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

Options:
A) 1 year
B) 5 years
C) 2 year
D) 3 year
Solution:

Ans: (c)

Total age of 5 members, three years ago

= 17 × 5 = 85 years


Three years hence,

 Total age of 5 members = 85+3x5 = 85+15 = 100 years


Sum of present ages of 6 members = 17 × 6 = 102 years


Present age of baby= 102 – 100 = 2 years.

Knowledge Expert

· commented

· 1 Months ago

Given answer is correct.....a typing error occurred in the solution.....It has been resolved....


See Solution:

Total age of 5 members, three years ago
= 17 × 5 = 85 years

Three years hence,
Total age of 5 members = 85+3x5 = 85+15 = 100 years

Sum of present ages of 6 members = 17 × 6 = 102 years

Present age of baby= 102 – 100 = 2 years.
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