How old

The student who asked how many years he answered: "After ten years, I will be twice as old as I was four years ago. How old is the student?

Correct answer:

x =  18

Step-by-step explanation:


x+10 = 2· (x-4)

x = 18


x = 18/1 = 18

x = 18

Our simple equation calculator calculates it.



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