SOLUTION: the age of a mother is three times the age of her daughter what will be the daughter age when her mother is 81 year?

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Question 1151050: the age of a mother is three times the age of her daughter what will be the daughter age when her mother is 81 year?
Found 2 solutions by MathLover1, ikleyn:
Answer by MathLover1(20850)   (Show Source): You can put this solution on YOUR website!
let the age of a mother be and the age of her daughter
if the age of a mother is three times the age of her daughter, we have
........eq.1

what will be the daughter age when her mother is year:

........eq.2






the age of a mother :
and the age of her daughter :

in years mother's age will be and daughter's age will be


Answer by ikleyn(52803)   (Show Source): You can put this solution on YOUR website!
.
the age of a mother is three times the age of her daughter what will be the daughter age when her mother is 81 year?
~~~~~~~~~~~~~~~~


            As this problem / (this question)  is worded,  printed,  posted and presented,  it  HAS  NO  a unique answer.

            Different / (many)  answers are possible. 


For example, 


    1)  if now / (today) they are 10 and 30 years old, then the mother will be 81 years old in 81-30 = 51 years;

        at that time, the daughter will be 10+51 = 61 years old.



    2)  if now / (today) they are 15 and 45 years old, then the mother will be 81 years old in 81-45 = 36 years;

        at that time, the daughter will be 15+36 = 51 years old.

Answered and explained.


You can create other situations / cases   on your own.



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