Answer: If 20% of a farmer's harvest had to be given to Pharaoh, and the farmer had to give 40 bushels, we can set up the equation:
(x * 0.2) = 40 bushels
where x represents the number of bushels the farmer harvested. To find the value of x, we can divide both sides of the equation by 0.2:
x = 40 bushels / 0.2
x = 200 bushels
Therefore, the farmer harvested 200 bushels of grain that year.
Explanation: