Melissa has a rope that is 84 feet long. she is cutting it into 7-foot pieces to make a ropes. How many jump ropes can she make?

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Melissa has a rope that is 84 feet long. she is cutting it into 7-foot pieces to make a ropes. How many jump ropes can she make?

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So,

Melissa's rope is 84ft. long.
Each piece must be 7ft. long.

We divide the length of the rope by the required length of each piece.

Now we have a fraction: 84/7

Prime Factorization

Prime factored form of 84: 2*2*3*7
Prime factored form of 7: 7

Cross out 7's
2*2*3/1 or 12/1 or 12

Melissa can make 12 ropes.

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