Question

Задача: Виноград при сушке теряет 70% своей массы. Сколько изюма (сушёного винограда) получится из 100 кг свежего винограда; 250 кг свежего винограда; 80 кг свежего винограда?

Answer 1

100кг
100 - 70 = 30%(остается после сушки)
то есть 30кг
250 кг
то есть 250%
если 100% уменьшается на 70%,то 250% уменьшится на 70 + 70 + 70 / 2
250 - 175 = 75 кг
80 кг
80 % 70 = 80 - 56 = 24 кг

Answer 2

Calculating the Amount of Raisins from Fresh Grapes

To calculate the amount of raisins obtained from fresh grapes after losing 70% of their mass during drying, we can use the following formula:

Amount of Raisins = (100% - 70%) * Amount of Fresh Grapes

Let's calculate the amount of raisins obtained from 100 kg, 250 kg, and 80 kg of fresh grapes.

1. For 100 kg of fresh grapes: - Amount of Raisins = (100% - 70%) * 100 kg - Amount of Raisins = 30% * 100 kg - Amount of Raisins = 0.30 * 100 kg - Amount of Raisins = 30 kg 2. For 250 kg of fresh grapes: - Amount of Raisins = (100% - 70%) * 250 kg - Amount of Raisins = 30% * 250 kg - Amount of Raisins = 0.30 * 250 kg - Amount of Raisins = 75 kg 3. For 80 kg of fresh grapes: - Amount of Raisins = (100% - 70%) * 80 kg - Amount of Raisins = 30% * 80 kg - Amount of Raisins = 0.30 * 80 kg - Amount of Raisins = 24 kg Therefore, from 100 kg of fresh grapes, approximately 30 kg of raisins can be obtained. From 250 kg of fresh grapes, approximately 75 kg of raisins can be obtained, and from 80 kg of fresh grapes, approximately 24 kg of raisins can be obtained.