Question

Из полного бака вылили 60% всей воды, потом вылили 25% оставшейся. Сколько % всей воды осталось в баке? Ответ: 30% Надо решение

Answer 1

Было 100%. После первого слива осталось 40% от исходного. Потом слили 25% от остатка, т.е. 1/4 от 40%=10% от общего объема. В сумме слили 60%+10%=70% от общего объёма, и осталось 100-70=30%

Answer 2

100%-вся вода в баке
1)100-60=40% 
2)40-25=15%
3)15*2=30%

Answer 3

Problem Analysis

We are given that 60% of the total water in a tank is poured out, and then 25% of the remaining water is poured out. We need to determine the percentage of the total water that remains in the tank.

Solution

Let's assume that the total amount of water in the tank is 100 units.

After pouring out 60% of the water, we are left with 40 units of water.

Then, 25% of the remaining water is poured out. This means that 25% of 40 units is poured out, which is equal to 10 units.

Therefore, the amount of water remaining in the tank is 40 units - 10 units = 30 units.

To find the percentage of the total water that remains, we can calculate it as follows:

Percentage of water remaining = (Amount of water remaining / Total amount of water) * 100

Substituting the values, we get:

Percentage of water remaining = (30 units / 100 units) * 100 = 30%

Therefore, 30% of the total water remains in the tank.

Answer

The percentage of the total water that remains in the tank is 30%.

References

- No external references were used for this response.