Question

В бронзе 85% меди,остальное олово. на сколько кг больше меди,чем олова,содержится в 5 кг бронзы решение дробями

Answer 1

1) 100-85=15% олова
2)5*0,85=4,25 (кг) меди
3) 5*0,15=0,75(кг) олова
4)4,25-0,75=3,5(кг) 
Ответ на 3,5 кг больше меди

Answer 2

5*85:100=4,25 кг меди
5-4,25=0,75 кг олово
4,25-0,75=3,5 кг разница
Ответ: на 3,5 кг меди больше,чем олова

Answer 3

Calculating the Amount of Copper and Tin in Bronze

To calculate the amount of copper and tin in 5 kg of bronze, we can use the given composition of bronze, which is 85% copper and the rest tin.

Let's denote: - C as the amount of copper in the bronze - T as the amount of tin in the bronze

Given that 85% of the bronze is copper, we can calculate the amount of copper as follows: C = 85% of 5 kg

Using the given information, we can calculate the amount of tin as follows: T = 100% - 85% = 15% of 5 kg

Now, we can calculate the actual amounts of copper and tin in kilograms.

Calculating the Amount of Copper

C = 85% of 5 kg C = 0.85 * 5 kg C = 4.25 kg

Calculating the Amount of Tin

T = 15% of 5 kg T = 0.15 * 5 kg T = 0.75 kg

Conclusion

In 5 kg of bronze, there is 4.25 kg of copper and 0.75 kg of tin. Therefore, there is 3.5 kg more copper than tin in 5 kg of bronze.