Respuesta :

Answer:100*7.5=750cm=7.5 m

left rope=20-7.5=12.5m

Step-by-step explanation:

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Answer:

12.5 metres

Step-by-step explanation:

→ Multiply the pieces by the length

100 × 7.5 = 750 cm

→ Convert to metres

750 cm = 7.5 metres

→ Minus from original length

20 - 7.5 = 12.5 metres