Three years ago, the average age of a family of 5 members was 17 years. A baby was born, but the…
Three years ago five members averaged 17 years, so their total was 85, and today those five total \(85+15=100\) years. With the baby the family of six still averages 17, so…
Choose your answer
Three years ago, the average age of a family of 5 members was 17 years. A baby was born, but the average age of the family is still the same today. The present age of the baby is :
Answer and explanation
Correct answer C
Three years ago five members averaged 17 years, so their total was 85, and today those five total years. With the baby the family of six still averages 17, so the total is . The baby's age is therefore years.
Practice for these exams
-
UGC NET Law
Subject revision
See pack details on LawMint.net -
UGC NET Paper I