|
Answer
: 36 days
The cow eats as much as the goat and the goose.
The cow and goat eat the grass in 45 days.
Two goats and a goose would take the same time.
A goat and goose would be twice as long.
One goat would take 90 days, and that the goose could just keep up with
the growing grass.
Therefore:
if the cow eats 1/60 of the stock per day and the goat 1/90, together
they would eat 1/36.
The cow and goat would eat up the crop in 36 days, while the
goose
devotes the same time to taking care of the daily growth.
|
