Respuesta :

1234umathuman

Answer:

Elga is 25 and Alvin is 10

Step-by-step explanation:

25 - 10 is 15

25 + 10 = 35

znk

Answer:

25  

Step-by-step explanation:

Let  A = Alvin's age

and E = Elga's age

We have two conditions:

(1)            A = E – 15

(2)    A + E = 35     Substitute (1) into (2)

E – 15 + E = 35     Combine like terms

   2E – 15 = 35     Add 15 to each side

          2E = 50      Divide each side by 2

            E = 25

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