Threesome

Dana, Dalibor and Michael have a combined 57 years. Dana is five years older than Dalibor, but Dana is five years younger than Michael. Determine how old is Dana, Dalibor and Michael.

Correct answer:

a =  19
b =  14
c =  24

Step-by-step explanation:


a+b+c=57
a = 5+b
a = c-5

a+b+c = 57
a-b = 5
a-c = -5

a = 19
b = 14
c = 24

Our linear equations calculator calculates it.



Did you find an error or inaccuracy? Feel free to write us. Thank you!



avatar




Tips to related online calculators
Do you have a linear equation or system of equations and looking for its solution? Or do you have a quadratic equation?
Do you want to convert time units like minutes to seconds?

You need to know the following knowledge to solve this word math problem:

Related math problems and questions:

  • Three brothers
    family The three brothers have a total of 42 years. Jan is five years younger than Peter and Peter is 2 years younger than Michael. How many years has each of them?
  • The family
    family How old is a mother if she is four times older than her daughter and 5 years ago she was even seven times older than her daughter? Today, a son is 30 years younger than a father. 7 years ago, a father was seven times older than a son. How old is a son tod
  • Family
    4kids Family has 4 children. Ondra is 3 years older than Matthew and Karlos 5 years older than the youngest Jane. We know that they are together 30 years and 3 years ago they were together 19 years. Determine how old the children are.
  • Father and sons
    family After15 years will father many years as his two sons together now. There is a six-year difference between the brothers, and the older one celebrated fifty years three years ago. How old is their father now?
  • Three friends
    three_friends Peter is eight times older than Rado, Rado is 3 times younger than Joseph. Together they have 120 years. Determine how many are each of them.
  • Three siblings
    brothers Three siblings have birthday in one day-today. Together they have 35 years today. The youngest is three years younger than middle and the oldest is 5 years older than middle. How old is each?
  • Mother and daughter
    family The mother is four times older than her daughter. Five years ago, her daughter was seven times younger than her mother. How many years do they have now?
  • Grandfather and grandmother
    family The old mother is 5 years younger than the old father. Together they are 153 years old. How many years has each of them?
  • After 16 years
    diana After 16 years will Dana be five times older as she was four years ago. After how many years will Dana celebrate her 16th birthday?
  • Money
    money Peter has 2x more money than Michael. But if Peter gave Michael € 16 Michael would have 3.5 times more money than Peter. Determine how much money was originally Peter and how much Michael.
  • 14 years
    family Kája is 14 years old. Mom 44. How many years will mom be 4 times older?
  • Age problems
    time A) Alex is 3 times as old as he was 2 years ago. How old is he now? b) Casey was twice as old as his sister 3 years ago. Now he is 5 years older than his sister. How old is Casey? c) Jessica is 4 years younger than Jennifer now. In 10 years, Jessica will
  • Family parcels
    map In father will he divided the land so that the older son had three bigger part than younger son. Later elder son gave 2.5 ha field to younger and they had both the same. Determine the area of family parcel.
  • Mother and son
    family Mother is four times older than her son. In 16 years, the son will be two times younger than his mother. How many years are mother and son?
  • Potatoes
    zemiaky Daniela and Michael would jointly dug potatoes for 7.5 hours. But if Daniela was working alone she would take 2.5 hours more as if he were working with Michael. Determine how much for the work done by Michael himself and how much Daniela herself.
  • Grandfather
    family The grandfather is three years older than a grandmother. The average age of the grandmother, the grandfather, and their seven grandchildren is 28 years. The grandchildren have a total of 105 years. Calculate how old grandfather is.
  • Mother and daughter
    mom_daughter Three years ago, the mother was three times older than the daughter. After nine years, she will be only twice old. How old is the mother (and daughter)?