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Valentina wants to cut a long piece of rope into pieces. Each cut takes her 4 seconds.
If Valentina took 20 seconds total to cut the rope, how many pieces does she have now?

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answer is D.

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Detailed Solution

Draw a table.

Fill the table till it reaches 20 seconds.

Number of cuts	No. of pieces of rope	Time taken
1	2	4 seconds
2	3	8 seconds
3	4	12 seconds
4	5	16 seconds
5	6	20 seconds

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