una tela se parte en trozos: el primer pedazo mide 12/5 m; el segundo mide 8/3 m y el tercero mide 5m. ¿que longitud había de tela?

the mistake in the pattern is that :

b. the decimal point was moved one too many place values each time

the correct pattern could be made by :

b. moving the decimal point to the right the same numbers of place values as the exponents

i dont understand the question