Two sisters, Elizabeth and Margareth, bought beads. Elizabeth bought 1 pack of red and 2 packs of clear beads, while Margareth bought 3 packs of blue and 4 packs of red beads. How many more beads do one sister have than the other, if each pack of beads contains 20 pieces of beads?
How many packs did Elizabeth buy? ** Elizabeth bought 1 + 2 = <<1+2=3>>3 packs.
How many pieces of beads did Elizabeth buy? ** So Elizabeth bought 3 x 20 = <<3*20=60>>60 pieces of beads.
How many packs did Margareth buy? ** Margareth bought 3 + 4 = <<3+4=7>>7 packs.
How many pieces of beads did Margareth buy? ** So Margareth bought 7 x 20 = <<7*20=140>>140 pieces of beads.
How many more beads does one sister have than the other? ** Therefore, Margareth bought 140 - 60 = <<140-60=80>>80 more beads than Elizabeth.
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