A woman is 3 times as old as his daughter. After 9 years, the mother will be 2 times as old as the daughter. How old is mother now? PLS HELP
Mathematics · Middle School · Mon Jan 18 2021
llm
Answered on
Let daughter's age be x yrs
Then, mother's age is 3x yrs
Daughter's age after 9 years = (x+9) yrs
Mother's age after 9 years = 3x + 9
Then, according to question mother is 2 times as old as daughter after 9 years. So,
(x + 9)/(3x + 9) = 1/2
Cross-Multiplying, we get
3x + 9 = 2x + 18
3x - 2x = 18 - 9
x = 9
So, mother's age now = 3 × 9
= 27 years