Curing the best. It was found that the time to the sinking of the heavy stone 70 g takes an average of 51.67 minutes, followed by 1 ratio: 4 time to the sinking of the heavy stone 70 grams. The average 38.33 minutes. Next up is the ratio 1:2 time to the sinking of the heavy stone 70 grams, average 35 minutes and the last is the ratio 1: 1 sank immediately.
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