Can you find the country hidden in the following paragraph:
Once upon a time in a land far away, lived a hamster. Every morning, very early, the hamster had to go into the forest and forage for food. Every morning, he would come back hungry and miserable.
Once upon a time in a land far away, lived a hamster. Every morning, very early, the hamster had TO GO into the forest and forage for food. Every morning, he would come back hungry and miserable.
Reasoning
In 36 hours, Alex could empty 2 lots of bookshelves, Billie could also empty 2 lots of bookshelves, and Drew could refill 1 lot of bookshelves.
So, 2 + 2 − 1 = 3 lots of bookshelves in 36 hours. Which is 12 hours for one lot of bookshelves.
Alternative Reasoning
Alex and Billie can each empty 1/18 of the bookshelves in 1 hour, but Drew will refill 1/36 of the bookshelves in one hour.
So in one hour we have 1/18 + 1/18 − 1/36 = 1/12.
So it would take 12 hours to empty the bookshelves.