3 years ago

Please answer this math question.

Mathematics

1 answer:

Molodets [167]3 years ago

7 0

Answer:

21 minutes

Step-by-step explanation:

To cut a 5-ft log into 5 equal peices, you need to make 4 cuts (each cut cuts one piece from a whole log, the last cut divides the remaining log into two pieces).

If it takes $5\dfrac{1}{4}$ minutes to make one cut, then it takes

$5\dfrac{1}{4}\cdot 4=\dfrac{5\cdot 4+1}{4}\cdot 4=\dfrac{21}{4}\cdot 4=21$

minutes to cut the log into 5 equal pieces.

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