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Jonny cut a plank of wood so that it is 50% shorter.

It is now 42cm long.

How long was the plank of wood before Jonny cut it?

Respuesta :

10n31y

[tex]42 \: cm \times 2 = 84 \: cm[/tex]

The plank of wood was 84 cm bejore Jonny cut it.

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Proof:

[tex]84 \times 0.50 = 42 \: cm[/tex]

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