Answer:
4y + 12 years
Step-by-step explanation:
Your age is specified as y years.
Your sister is older than you by 3 years. Expressing sister's age mathematically, it is equal to (y + 3) years
Your uncle's age is four times your sister's age.
Hence uncle's age = \[4* (y+3)\] years
Simplifying, uncle's age = \[(4*y + 4*3)\] years
In other words, uncle's age = \[(4y + 12)\] years
Hence the required age of the uncle can be represented as 4y + 12 years.
