Question

The average age of Ratul's family 8 years ago (comprising 5 members) was 41 years. Three years ago a girl child was born. What
will be the approximate average age of Ratul's family 3 years hence ? (Consider no other changes took place in terms of members)​

Answer 1

vzkiqgvMiwgvzvvKiegvvsjie

Answer 2

Given :-

• Average age of Ratul's family 8 years ago (comprising 5 members) = 41 years.
• Three years ago a girl child was born.

To Find :-

• What will be the approximate average age of Ratul's family 3 years hence ?

Solution :-

we know that,

• Average = Sum of observations / Total number of observations.

so,

→ Total ages of Ratul's family members 8 years ago = Average * 5 = 41 * 5 = 205 years.

then,

→ Total ages of all 5 members now = 205 + 8*5 = 205 + 40 = 245 years.

and,

→ Total ages of 5 members + 1 girl = 245 + girl age = 245 + 3 = 248 years.

therefore,

→ Sum of ages of all 6 members after 3 years = 248 + 3 * 6 = 248 + 18 = 266 years.

hence,

→ Average = 266/6 ≈ 44.34 years. (Ans.)

∴ The approximate average age of Ratul's family 3 years hence will be 44.34 years.

Learn more :-

IS

1 In a certain month, the total income of A, B,

644000. In that month, Aspends 75% of his

income, B spends 80% of his...

https://brainly.in/question/18235837