Question

В первый день продали 55% всего сахара,во второй 60% остатка,а в третий оставшиеся 54 килограмма.сколько килограмм сахара продали за три дня?

Answer 1

 Пусть x кг - было всего
x-0.55*x=0.45*x  остаток в 1 день
0,45*x*0.6=0.27*x  продали во 2 день
x-0,55*x-0,27*x=0.18*x  остаток на 3 день
54:0,18=300 (кг) всего

Answer 2

40% остатка = 54кг
=> 100% остатка это 135кг
135кг это 45% тогда всего за три дня продали 300 кг

Answer 3

Problem Analysis

We are given the following information: - On the first day, 55% of the total sugar was sold. - On the second day, 60% of the remaining sugar was sold. - On the third day, the remaining 54 kilograms of sugar were sold.

We need to find the total amount of sugar sold over the three days.

Solution

To find the total amount of sugar sold over the three days, we need to calculate the amount of sugar sold on each day and then sum them up.

Let's assume the total amount of sugar is x kilograms.

On the first day, 55% of the total sugar was sold, which is equal to 0.55x kilograms.

On the second day, 60% of the remaining sugar was sold. The remaining sugar after the first day is (1 - 0.55)x = 0.45x kilograms. Therefore, the amount of sugar sold on the second day is 0.6 * 0.45x = 0.27x kilograms.

On the third day, the remaining sugar is 54 kilograms. Therefore, the amount of sugar sold on the third day is (0.45x - 54) kilograms.

To find the total amount of sugar sold over the three days, we sum up the amounts sold on each day:

Total sugar sold = Amount sold on the first day + Amount sold on the second day + Amount sold on the third day

Total sugar sold = 0.55x + 0.27x + (0.45x - 54)

Simplifying the equation:

Total sugar sold = 1.27x - 54

Now, we need to solve for x to find the total amount of sugar sold.

To solve for x, we can use the information given in the problem. On the third day, the remaining sugar is 54 kilograms. Therefore, we can set up the equation:

0.45x - 54 = 54

Simplifying the equation:

0.45x = 108

Dividing both sides by 0.45:

x = 240

Therefore, the total amount of sugar sold over the three days is 240 kilograms.

Answer

The total amount of sugar sold over the three days is 240 kilograms.