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1era jugada:
- Pierde: 1/3*x = x/3
- Le queda: x - x/3 = 2x/3
2da jugada:
- Pierde: 1/3*(2x/3) = 2x/9
- Le queda: 2x/3 - 2x/9 = (6x - 2x)/9 = 4x/9
3era jugada:
- Pierde: 1/3*(4x/9) = 4x/27
- Le queda: 4x/9 - 4x/27 =
(12x - 4x)/27 = 8x/27
Igualamos
8x/27 = 800
8x = 27*800
X = 27*(800/8)
X = 2 700
Empezó con $2700