Final answer:
To calculate the amount of food the farmer has left, subtract the quantities of food that Jane bought from the total amount the farmer brought to the market.
Step-by-step explanation:
To calculate how much food the farmer has left, we need to subtract the amounts of food that Jane bought from the total amount the farmer brought to the market. Jane bought 6 kilograms of potatoes, 1 ten kilogram pumpkin, and 2 kilograms of green beans. Adding these quantities together, Jane bought a total of 6 + 10 + 2 = 18 kilograms of food. Subtracting this from the total amount the farmer brought, 64 - 18 = 46 kilograms. Therefore, the farmer has 46 kilograms of food left.