The weight of a steel bar is 9 kg. 14 parts were made from it, the weight of each of them 5 of them is 8 kg.
| May 2, 2021 | education
The weight of a steel bar is 9 kg. 14 parts were made from it, the weight of each of them 5 of them is 8 kg. How many kilograms of steel are left in excess.
First, we find what is the total weight of all steel parts that are obtained from a given steel bar.
In the wording of the condition for this assignment, it is reported that a total of 14 parts were manufactured, and the mass of one such part was 5/8 kg.
Since the mass of 14 such parts is 14 times greater than the mass of one such part, the total mass of all these steel parts is 14 * 5/8 = 5 * 14/8 = 5 * 7/4 = 35/4 kg.
Since the mass of the steel bar was 9 kg, 9 – 35/4 = 36/4 – 35/4 = 1/4 kg of steel turned out to be unclaimed.
Answer: 1/4 kg of steel turned out to be in excess.
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