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15-06-2020
Mathematics

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Max is 9 years older than John. In years, the sum of their ages will be 49 . Find Max's present age

Respuesta :

15-06-2020

Answer:

29

Step-by-step explanation:

Max's age = x

John's age = y

We know:

x = y + 9
x + y = 49

Using the system of two functions, we plug the first equation inside the other:

(y + 9) + y = 49

2y = 40

y = 20

Now let's substitute this value into one of the equations so to find x

x = 20 + 9 = 29

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