john's age in the next ten years will four times his age five years ago. How old is john now?
x+10 = 4(x-5)
To find John's current age, let's break down the problem step by step:
Let's assume John's current age is represented by x.
According to the problem, "John's age in the next ten years will be four times his age five years ago." This can be stated as:
x + 10 = 4(x - 5)
Now, let's solve this equation to find x, John's current age:
x + 10 = 4x - 20
Simplifying the equation, we combine like terms:
10 + 20 = 4x - x
30 = 3x
Finally, divide both sides of the equation by 3 to isolate x:
30 / 3 = x
x = 10
Therefore, John is currently 10 years old.