In a Farm, there are:
 => 75 acres of wheat
 => 62.5 acres of corn
 In each day, the farm crew can harvest:
 => 12 acres of wheat
 => 10 acres of corn
 Find how many days can the farm crew harvest all of the plants,
 => 75 / 12
 => 6.25, thus the farm crew will take 6.25 days to be able to harvest acres of wheat
 => 62.5 / 10
 => 6.25, thus the farm crew will take 6.25 days also to harvest acres of corn.