1. Immediately after harvesting, the water content in 1 ton of tomatoes was $99 \%$. By the time of sale, the water share had decreased by $4 \%$ (after drying). What did the total weight of the tomatoes become?
Solution. The weight of the dry matter in tomatoes is $1 \%$ of 1 ton - 10 kg. After drying, the weight of the dry matter does not change and constitutes $5 \%(100 \%-$ $(99 \%-4 \%))$ of the total weight of the tomatoes. In other words, the total weight is 200 kg.

Remark. Perhaps, the student can be given 2 - 3 points if, during the solution, they figured out how to calculate the weight of the dry matter but did not use it for further reasoning.

Answer. 200 kg.