Ralph is 3 times as old as Sara. In 4 years, Ralph will be only twice as old as Sara will be then. Find Ralph's age now.

If x represents Sarah's age now, which of the following expressions represents Ralph's age in four years ?

3 x
6 x
2 x + 4
3 x + 4

Question

Ralph is 3 times as old as Sara. In 4 years, Ralph will be only twice as old as Sara will be then. Find Ralph's age now. 

If x represents Sarah's age now, which of the following expressions represents Ralph's age in four years ?

3 x
6 x
2 x + 4
3 x + 4

whpalmer4 · Answer

Ralph is 3 times as old as Sara.  Sara's age is $x$.  

What is Ralph's age? (note: this is not the answer to the problem yet, we're building it up step-by-step)

whpalmer4 · Answer

Well, whatever you figure out for Ralph's age today, Ralph's age in 4 years will be Ralph's age today + 4.

anonymous · Answer

I know the answer

whpalmer4 · Answer

and it is....

whpalmer4 · Answer

for bonus points, how old are Ralph and Sara now?