Correct Answer - Option 1 : 10 ∶ 3

**Given **

The average age of women and daughter = 21 years

**Formula Used **

Average = Sum of observation/No. of observation

**Calculation **

Sum of age of women and her daughter = 21 × 2 = 42 years

⇒ 5x + x = 42

⇒ x = 6

After 5 years, Women : Daughter = 5x + 5 : x + 5

⇒ 40 : 12 = 10 : 3

**∴ The required answer is 10 : 3 **