Monday

April 21, 2014

April 21, 2014

Posted by **Vic** on Thursday, September 22, 2011 at 8:32pm.

- Math -
**Vic**, Friday, September 23, 2011 at 12:34amHelp need equation

- Math -
**PsyDAG**, Friday, September 23, 2011 at 2:12pmLet x = maria's age and y = her brother's.

x = 3y

(x+4) = 2(y+4)

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

**Related Questions**

math - Mary, who is sixteen years old, is four times as old as her brother. How...

Math - Luis is 10 years older than his brother. Next year, he will be three ...

Mathematics - Sean is 20 and his brother is 12. How many years ago was Sean ...

math - helen is 9 years old and her brother is two times as old as she. when ...

math - your brother jack will be 2 years from being twice as old as your sister ...

5th grade math - i have to write an algebraic expression for the following: ...

MATH - Sam is 5 years old. His older brother, Tom, is three times as old as Sam...

MATH - Sam is 5 years old. His older brother, Tom, is three times as old as Sam...

6 grade math - This Christmas,your brother Jack will be 2 years from being twice...

Math - This Christmas,your brother Jack will be 2 years from being twice as old ...