<human>:  Tony wants to build the longest rope he possibly can, so he collects all the rope in his home. He finds an 8-foot rope, a 20-foot rope, three 2 foot ropes, and a 7-foot rope. each knot between the ropes makes him lose 1.2 foot per knot. How long is his rope when he's done tying them all together?
<bot>: How many feet of rope does Tony have? ** The combined length of all the rope is 41 feet because 8 + 20 + (2 x 3) + 7 = <<8+20+(2*3)+7=41>>41
How many feet does Tony lose from the knots? ** He loses 6 feet from the knots because 5 x 1.2 = <<5*1.2=6>>6
How long is his rope when he's done tying them all together? ** The final length is 35 feet because 41 - 6 = <<41-6=35>>35
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