15 yrs ago:
Jac --- x
grandma -- 3x
now
Jac --- x+15
grandma -- 3x + 15
x+15 + 3x+15 = 110
solve for x, then sub into 30+15
Jacqueline was one-third as young as her grandmother 15 years ago. If the sum of their ages is 110, how old is Jacqueline's grandmother?
2 answers
75
1 answer