posted by .

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?

Let x be Jack's age.
Let y be Jen's age.

x = 2y - 2
x + 3y = 66

So:

2y - 2 + 3y = 66
5y - 2 = 66
5y = 68
y = 13.6.
So she's about 13 and a half years old.

## Similar Questions

1. ### 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?
2. ### Algebra

this december 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 68. how old is jen?
3. ### 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?
4. ### math

Jen makes \$5.00 per hour more than Tiffany. If 12 times Jen's rate plus 3 times Tiffany's rate is \$80.00, what is Jen's hourly age?
5. ### Math

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?
6. ### math

A. A woman was 30 years old when her daughter was born.Her age is now 6 years more than three times her daughter's age. How old will the daughter be in 5 years?
7. ### 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?
8. ### 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?
9. ### math 4th grade no algebra

Jen is 26 years younger than her mom. Together, their ages total 50. How old is Jen?
10. ### maths

amelie is x years old her sister is four years older her brother is three times her age the sum of their age is 44 years

More Similar Questions