Question

Сплав вагою 2 кг складається з срібла i мiдi. частина мiдi 15%. скiльки кг срiбла у сплавi?

Answer 1

Решение:
Примем общее количество сплава в процентах за 100%, тогда серебра в сплаве:
100% -15% =85%
Отсюда количество серебра в сплаве в кг равно:
2кг *85% :100%=1,7 кг

Ответ: Содержание серебра в сплаве 1,7 кг

Answer 2

Calculation of the Amount of Silver in the Alloy

To calculate the amount of silver in the alloy, we need to know the total weight of the alloy and the percentage of copper present.

Given: - Total weight of the alloy: 2 kg - Percentage of copper in the alloy: 15%

To find the weight of silver in the alloy, we can use the following formula:

Weight of silver = Total weight of the alloy - Weight of copper

Let's calculate the weight of copper first.

Weight of copper = Percentage of copper * Total weight of the alloy

Weight of copper = 15% * 2 kg = 0.15 * 2 kg = 0.3 kg

Now, we can calculate the weight of silver.

Weight of silver = Total weight of the alloy - Weight of copper

Weight of silver = 2 kg - 0.3 kg = 1.7 kg

Therefore, there are 1.7 kg of silver in the alloy.