Question

Бригада плотников израсходовала на ремонт здания 4,2 куб. метра досок. При этом она сэкономила 16% выделеных для ремонта досок. Сколько куб. метров досок было выделено на ремонт здания?

Answer 1

100%-16% = 84% -израсходовали досок от выделенного объёма.
Пропорция:
4,2 куб.м. - 84%
x куб.м. - 100%
x = 4,2*100%:84% = 5 куб.м.

Answer 2

Calculating the Amount of Wood Allocated for Building Repair

To calculate the amount of wood allocated for building repair, we can use the information provided. The brigade of carpenters used 4.2 cubic meters of wood for the repair and saved 16% of the allocated wood.

Calculation Steps

1. Calculate the Total Amount of Wood Used - The total amount of wood used for the repair is 4.2 cubic meters.

2. Calculate the Original Amount of Allocated Wood - Let's assume the original amount of wood allocated for the repair is represented by x cubic meters.

3. Calculate the Amount of Wood Saved - The brigade saved 16% of the allocated wood, which can be represented as 0.16x cubic meters.

4. Equation for the Total Amount of Wood Used and Saved - The total amount of wood used is the sum of the saved wood and the amount used for the repair: 4.2 = x + 0.16x.

5. Solve for the Original Amount of Allocated Wood - Solving the equation 4.2 = x + 0.16x gives us the value of x, which represents the original amount of allocated wood.

Conclusion

By solving the equation, we can find the original amount of wood allocated for the repair.

Let's proceed with the calculation.