Question 985258

Let &nbsp;<B>x</B>&nbsp; be the David' present age.

Then Carrie's present age is &nbsp;3<B>x</B>.


In &nbsp;5&nbsp; years Carries age will be &nbsp;3x+5, &nbsp;and David's age will be &nbsp;x+5.


According to the condition, &nbsp;the equation holds


3x + 5 = 2(x+5).


Solve it:


3x + 5 = 2x + 10,


3x - 2x = 10 - 5,


x = 5.


So, &nbsp;David is 5 years old now. &nbsp;Carrie is 3*5 = 15 years old now.