<human>:  A jug is filled with 5 liters of water and a bucket is filled with 4 jugs. How many liters of water are contained in 2 buckets?
<bot>: How many liters of water are in 4 jugs? ** 4 jugs contain 4*5 = <<4*5=20>>20 liters of water.
How many liters of water are in 2 buckets? ** 2 bucket contains 20*2 = <<20*2=40>>40 liters of water.
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