Writing algebraic expressions – Word Problem

2000 2001 2002 2003 2004 2005 1999 1998 1997 1996 1995 ‘n’ years younger ‘n’ years ago ‘n’ years older ‘n’ years from now Age decreases Age increases x Current age x-n x+n

Example 1: Radha is ‘x’ years of age now Example 1: Radha is ‘x’ years of age now. 4 years from now, her age will be _____ Solution: Given: Radha’s age is x To find: Radha’s age 4 years from now ‘4’ years from now ‘4’ years older Age increases x Radha’s age = x 4 years from now she will be 4 years older. So, we have to add 4 years from Radha’s today’s age. Radha’s age 4 years from now = x+4 Ans: x+4

Example 2: Arivazhagan is 30 years younger to his father Example 2: Arivazhagan is 30 years younger to his father. Write Arivazhagan's age in terms of his father's age. Solution: Given: Arivazhagan is 30 years younger to his father. Father’s age is unknown. To find: Arivazhagan’s age in terms of his father’s age 30 years younger Age decreases Arivazhagan’s age Arivazhagan’s father’s age Arivazhagan’s fathers age is unknown. So, Arivazhagan’s father’s age = x Arivazhagan is 30 years younger than his father. So, his age is 30 years less than his father’s age (x). Arivazhagan’s age = x-30 Ans: x-30

Try these Sheela’s age is ‘y’ years. What was her age 5 years ago? Ram’s father is 30 years older than his son Ram. Ram’s age is ____