SOLUTION: Manuel is 25 years old and his brother is 19. How many years ago was Manuel four times as old as David. I need help with how to set up the equation.

Question 812588: Manuel is 25 years old and his brother is 19. How many years ago was Manuel four times as old as David. I need help with how to set up the equation.

Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
Manuel is 25 years old and his brother is 19. How many years ago was Manuel four times as old as David.
-----
Assume the answer is "x" years.
----------
Equation:
25-x = 4(19-x)
------
25-x = 76 - 4x
3x = 51
x = 17 years
==============
Cheers,
Stan H.
---------------
RELATED QUESTIONS
Manuel is 25 years younger than Kayla. 8 years ago, Kayla's age was 2 times Manuel's age. (answered by josgarithmetic)

Manuel is 43 years old. Delaney is 30 years old. How many years ago was Manuel's age 2... (answered by josgarithmetic,ikleyn)

Manuel is 43 years old. Delaney is 30 years old. How many years ago was Manuel's age 2... (answered by ankor@dixie-net.com,Alan3354)

Stevie is twice as old as his brother. Four years ago he was four times as old a s his... (answered by jonvaliente)

3. The sum of the ages of Daniel and Ann is 25. Five years ago David was four times as... (answered by Fombitz)

Manuel is 8 years older than his sister. 3 years ago he was 3 times older than his... (answered by ewatrrr)

Alfred is twice as old as his brother. Four years ago he was four times as old. How old... (answered by vleith,Mathtut)

The sum of the ages of David and Ann is twenty-five. Five years ago David was four times... (answered by josgarithmetic)

Five years ago, Sean was three times as old as his brother. Today Sean is twice as old as (answered by Earlsdon)