A wineman has 6 barrels of wine and beer, and the capacity is
30
Rise
,
32
Rise
,
36
Rise
,
38
Rise
,
40
Rise
,
62
Rise
.
The five barrels are filled with wine, a barrel is fitted with beer. The first customer bought two barrels of wine; the second customer bought wines twice the first customer. May I ask, which bucket is installed with beer?
