Posted by **plz help** on Sunday, April 22, 2007 at 8:39pm.

four years agoslyvia was two thirds as old as alex was then. four years from now, she will be four fifths as old as alex will be. how old are sylvia and alex now?

Let S be SylVia's current age. Let A be Alex's current age. You have two equations to be solved simultaneously.

S-4 = (2/3)(A-4)

S+4 = (4/5)(A+4)

Subtract the fist equation from the second to eliminate s as a variable.

8 = (2/15)A + 16/5 + 8/3 = (2/15)A + 88/15

Continue the solution yourself

## Answer this Question

## Related Questions

- math - Michel is twice as old as his sister sylvia. In four years three times ...
- Algebra - Mimie is twelve years older than her brother Macky. Four years from ...
- math - A. John is now 10 years older than Marcus. Three times John's age 5 years...
- algebra - The combined age of a father and his two sons is 50 years. Four years ...
- math - Sanjeev is twice as old as his son.If after four years he will be four ...
- math - Sanjeev is twice as old as his son.If after four years he will be four ...
- math - A. Brad is 12 years older than Sam . If Brad were 8 years older than he ...
- ALG 2! plz help urgent!! - 1.)Four times a certain number is the same as the ...
- math - Orly's age is 4 years more than thrice Perla's age. Four years ago, Orly ...
- Math - Peter is 8 years younger than Alex. In 9 years' time, the sum of their ...

More Related Questions