After one day of sailing, 2/5*400 = <<2/5*400=160>>160 pounds of food supplies had been used.

The total number of supplies remaining in the ship is 400-160 = <<400-160=240>>240 pounds.

After another 2 days of sailing, 3/5*240 = <<3/5*240=144>>144 pounds of food had been used.

The total number of supplies remaining in the ship is now 240-144 = <<240-144=96>>96 pounds.

# Answer

96
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
A ship left a port and headed due west, having 400 pounds of food for the journey's supply. After one day of sailing, 2/5 of the supplies had been used by the sailors in the ship. After another two days of sailing, the sailors used 3/5 of the remaining supplies. Calculate the number of supplies remaining in the ship to last the sailors until they dock.
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
96
A ship left a port and headed due west, having 400 pounds of food for the journey's supply. After one day of sailing, 2/5 of the supplies had been used by the sailors in the ship. After another two days of sailing, the sailors used 3/5 of the remaining supplies. Calculate the number of supplies remaining in the ship to last the sailors until they dock.
train