itanio413
itanio413 itanio413
  • 01-04-2020
  • Mathematics
contestada

Next year, Dana will be twice as old as her sister will be. Four years ago, Dana was three
times as old as her sister was. How old is each now?​

Respuesta :

shamarsimpson11
shamarsimpson11 shamarsimpson11
  • 01-04-2020

Answer:2d-4 = 3d-12

d = 8 (Dana's age now)

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Solve for "r":

r = 2d

r = 2*8 = 16 (Renee's age now)

.

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