Math

posted by .

Alice is three times as old as Jack. In 10 years she will be twice as old as Jack. How old are Alice and Jack now? How old will they be in10 years

  • Math -

    A = 3J

    A + 10 = 2(J + 10)

    Substitute 3J for A in second equation and solve for J. Insert that value into the first equation and solve for A. Check by inserting both values into the second equation.

  • Math -

    12

  • Math -

    Jack=10 years old and Alice 30 years old

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Math

    2x represents that Clyde is twice (2 times) as old as Bonnie. 6 years from now, Clyde will be twice as old as his cousin Bonnie will be then. If Clyde is now 16 years old, how many years old is Bonnie?
  2. Math

    This Christmas,your brother Jack will be 2 years from being twice as old as your sister Jen.The sum of Jack's age and three times Jen's age is 66.How old is Jen?
  3. 6 grade math

    This Christmas,your brother Jack will be 2 years from being twice as old as your sister Jen.The sum of Jack's age and three times Jen's age is 66.How old is Jen?
  4. math

    i never can do word problems....please help... i got 7 of them.....these are word for word 1) Larry is 8 yrs older than his sister.In 3 yrs, hr will be twice as old as she will be then.how old is each now?
  5. 9th grade math word problems

    i never can do word problems....please help... i got 7 of them.....these are word for word 1) Larry is 8 yrs older than his sister.In 3 yrs, hr will be twice as old as she will be then.how old is each now?
  6. math

    your brother jack will be 2 years from being twice as old as your sister jen. the sum of jacks age and three times jens age is 66. how old is jem?
  7. math

    Jack is twice as old as he was 5 years ago. His mother was then six times as old as he was. She is now 35 years old. how old is jack?
  8. math

    50. 5 years ago, Jack was six less than twice of Kelly's current age. If Kelly was 20 years old three years ago, how old will be jack in 10 years?
  9. Math - age problem

    One year ago Liz was 3 times as old as her brother Jack. In two years she'll only be twice as old as Jack. How old are Liz and Jack now?
  10. math

    John is twice as old as his friend peter.peter is 5 years older than Alice.in 5 years John will be three times as old as Alice .how old is peter now?

More Similar Questions