She needs 60 inches of rope because 10 x 6 equals <<10*6=60>>60
The six-foot length of rope is 72 inches long because 6 x 12 = <<6*12=72>>72
The six-foot length of rope would give her 12 pieces because 72 / 6 = <<72/6=12>>12
The six-foot length is long enough because 12 > 10
Each 1-foot rope equals 12 inches
She would need 5 of the 1-foot ropes because 60 / 12 = <<60/12=5>>5
If she bought one-foot ropes it would cost $6.25 because 5 x 1.25 = 6.25
The cheapest rope to buy is the 6-foot rope because 5 < 6.25
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