Question

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

Answer 1

Ralph is 12 years old.

Answer 2

Ralph's age now is 12 years

Explanation:

This problem bothers on word problem

Step one

Let us begin by stating The problem Mathematically

Let Sara's age be x

1. Ralph is 3 times Sara's age =3x

2. In 4 year's time Ralph will be twice Sara's age

I.e 3x+4= 2x

Let's solve for Sara's age

3x+4= 2x

3x-2x=-4

x=-4

Since it is age we can't have a negative symbol

x+4

To find Ralph's age we use statement 1

Ralph is 3 times Sara's age

3x= 3(4)= 12

Hence Ralph is 12 years old currently