Fire output

The binks rescue binks method simply consists of a rope that passes through a pulley and has at each end a large basket. When one of the baskets goes down, the other goes up. In this way, placing an object in one of the baskets to serve as a counterweight, a heavier object can be lowered in the other basket. The inventor says that his device must be hung outside all buildings in the world.

The system was adopted in a hotel, but the most waspped guests used it to escape during the night without paying, so the mechanism did not continue with the approval of the hoteliers.

The image shows a binks elevator located before the window of a modern summer hotel. Nothing that weighs more than thirty pounds can be low.

One night a fire broke out at the hotel and all the guests managed to escape except the night watchman and his family. When they could be alerted, all the escape routes, except the binks elevator, were blocked by the fire. The watchman weighed 90 pounds, his wife 210 pounds, the dog 60 pounds and the baby 30 pounds.

Each basket has sufficient capacity to house all four and no weights are available in the baskets, only the man, his wife, the dog and the baby.

If we assume that neither the dog nor the baby are able to enter or leave the basket without the help of the man or his wife, What is the fastest way that the four get safe?

The fastest method of lowering everyone by the Binks elevator is as follows:

• Lower the baby in one basket and the other rises empty.
• Lower the dog in one basket and raise the baby in the other.
• MAN DOWN.
• Lower the baby in one basket and the other rises empty.
• Lower the dog in one basket and raise the baby in the other.
• Lower the baby in one basket and go up the other empty.
• The wife goes down in one basket and everyone else goes up in the other.
• Lower the baby in one basket and go up the other empty.
• Lower the dog in one basket and raise the baby in the other.
• Lower the baby in one basket and go up the other empty.
• MAN DOWN.
• Lower the dog in one basket and raise the baby in the other.
• And finally lower the baby in one basket and go up the other empty.