Correct Answer - Option 1 : 1

**Given **

Average age of husband and wife 5 years ago = 23 years

**Formula Used **

Average = Sum of data/No. of data

**Calculation **

Let the age of Husband, Wife and Child be H, W and C

According to Question

H - 5 + W - 5 = 23 × 2 = 46

⇒ H + W = 56

Sum of Husband, Wife and Child age at present = 19 × 3 = 57

⇒ H + W + C = 57

⇒ C = 1 years

**∴ The age of child is 1 years **