Answer:
Step-by-step explanation:
Since, x represents Sarah's present age then
According to question
Ralph is 3 times as old as Sara.
that is present age of Ralph = 3x
After 4 years age of Sara will be x + 4
and age of Ralph will be 3x + 4.
According to question,
In 4 years, Ralph will be only twice as old as Sara will be then.
⇒ 3x + 4 = 2( x + 4)
Solving for x, we get,
⇒ 3x + 4 = 2 x + 8
⇒ 3x -2x = 8 - 4
⇒ x = 4.
Thus, Sara present is 4 years and Ralph present age is 3x = 12
