1000 men have provisions for 18 days. If 400 more men join them, for how many days will the provisions last now?  Choices:
A) 12.9
B) 12.8
C) 12.6
D) 12.2
E) 12.1
1000*18 = 1400*x   x = 12.8   Answer: 12.8
<result>B</result>
1000 men have provisions for 18 days. If 400 more men join them, for how many days will the provisions last now?