After 16 years

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?

Correct answer:

x =  7

Step-by-step explanation:


r+16 =5(r-4)
x = 16-r

r+16 =5•(r-4)
x = 16-r

4r = 36
r+x = 16

r = 9
x = 7

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:

  • 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
  • Suzan
    children2 Susan's age will be after 12 years four times as much as twelve years ago. How old is Susan now?
  • Time passing
    clock-night-schr 6 years ago, Marcela's mother was two times older than her and two times younger than her father. When Marcela is 36, she will be twice as young as her father. How old are Marcela, her father, and her mother now?
  • Mother and daughter
    clocks2 Mother is 44 years old, her daughter 14. How many years ago was her mother four times older than her daughter?
  • 45th birthday
    clock-night-schr This year Mrs. Clever celebrated her 45th birthday. Her three children are now 7, 11 and 15 years old. In how many years will Mrs. Clever's age be equal to the sum of her children's years?
  • Father and son
    father_son Father is 44 years old, his son 16 years. Determine how many years ago was the father five times older than the son.
  • 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)?
  • How old
    boy The student who asked how many years he answered: "After 10 years I will be twice as old than as I was four years ago. How old is student?
  • 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?
  • Maria 2
    family Maria is 7 years older than her brother Robert and in 2 years her age will be four times what Robert’s age was three years ago. Find their present ages.
  • Aunt
    teta Annie's aunt is 35 years old, Annie is 14 years. For how many years will aunt have twice as many years as Annie?
  • Intersections
    intersect_circles How many intersections have circles with radius 16 mm and 15 mm, if the distance of their centers is 16 mm.
  • 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?
  • Bed time
    clock-night-schr Tiffany was 5 years old; her weeknight bedtime grew by ¼ hour each year. If, at age 18, her curfew time is 11 pm, what was her bedtime when she was 5 years old?
  • Pair
    dvaja They have together 39 years - he has 2 times as she was when he was equal as she has today ....
  • Cakes
    cookies Grandmother baked cakes. Half of it was poppy, a quarter with plum jam, and 16 cheesecakes. How many cakes did she bake in total?
  • Daddy
    otec_syn Daddy is a 46-year-old, and his son is at the age of 16. When (which year) was/will daddy five times more years than his son?