Plz hurry a board 12 3/4 feet long is cut so that 9 7/8 feet are left. what length of the board was cut off? a) 21 2 ft b) 27 8 ft c) 31 2 ft d) 37 8 ft

2 7/8 ft

We presume no length was lost in the cut, so that ...

... (remaining length) + (cut off length) = (original length)

Then ...

... (cut off length) = (original length) - (remaining length)

... = 12 3/4 - 9 7/8

... = (12 - 9) + (3/4 - 7/8)

... = 3 + (6/8 -7/8)

... = 3 - 1/8

... = 2 7/8

The cut off length was 2 7/8 feet.

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