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One fourth of Eric’s age last year plus triple his age next year is 58. How old is Eric?

Respuesta :

sqdancefan

Answer:

  17

Step-by-step explanation:

Let e represent Eric's age now. The problem statement tells us ...

  1/4(e -1) + 3(e +1) = 58

  (3 1/4)e +2 3/4 = 58 . . . . simplify

  13/4e = 55 1/4 . . . . . . . . . subtract 2 3/4

  e = (4/13)(221/4) = 221/13 = 17 . . . . . multiply by 4/13

Eric is 17.

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