Final answer:
The number of workers in the crew is 3 times the total workers.
Step-by-step explanation:
To solve this problem, let's represent the number of workers in the crew as x. Since one of the vineyards has a double surface area, we can represent the number of workers needed for the larger vineyard as 2x. The total number of workers in the crew will be the sum of the workers needed for both vineyards, so it will be x + 2x = 3x. Therefore, the number of workers in the crew is 3 times the total workers.