About a third of an orange crop was ruined by a sudden frost. Another third of the undamaged fruit spoiled while being taken to market. How much of the original orange crop could the farmer sell at the produce market?

1/3 + 1/3 = 2/3

1 - 2/3 = ?

To find out how much of the original orange crop the farmer could sell at the produce market, we need to determine the final proportion of undamaged fruit.

Let's break down the information given:
- A third of the original orange crop was ruined by a sudden frost.
- This leaves two-thirds of the crop as undamaged fruit.
- Another third of the undamaged fruit spoiled while being taken to market.

To calculate the remaining proportion of undamaged fruit, we need to find two-thirds of two-thirds.

First, let's find two-thirds of the crop that survived the frost:
2/3 * 1 = 2/3

Now, let's find two-thirds of the remaining undamaged fruit that spoiled on the way to the market:
2/3 * 2/3 = 4/9

Therefore, the final proportion of undamaged fruit that the farmer could sell at the produce market is 4/9 of the original orange crop.