Rate - Wiki

  • #Rate
    • Junfang took 5 minutes in total to fold 2 identical paper cranes and a paper boat. She took 30 second less to fold a boat than a crane and spent the same amount of time folding each crane. How many seconds did she take to fold the paper boat? Ans: _BLANK_ s
      • #Rate

        2C + 1B = 5 min 

        5 min = 5 `xx` 60 = 300 sec

        3C = 300 + 30 = 330 sec

        1C = 110 sec

        2C = 220 sec

        1B = 300 - 220 = 80 sec

        80 sec is the correct answer.