Question

В магазин завезли 298 кг сахара. за первый день было продано 54 3/7 кг, за второй 57 8/9 кг, за третий 50 4/7 кг.сколько килограмм сахара осталось?

Answer 1

1)54 3/7 + 57 8/9 + 50 4/7=381/7 + 521/9 + 354/7=735/7 + 521/9=6615/63 +     3647/63=10262/63=162 56/63=162 8/9
2)298-162 8/9=135 1/9
Ответ:135 1/9 кг.

Answer 2

Calculation of Remaining Sugar

To calculate the amount of sugar that is left after selling a certain amount, we need to subtract the total amount sold from the initial amount.

Given that 298 kg of sugar was brought to the store, and the following amounts were sold: - First day: 54 3/7 kg - Second day: 57 8/9 kg - Third day: 50 4/7 kg

We can calculate the remaining sugar as follows:

1. Convert the mixed fractions to improper fractions: - 54 3/7 kg = (7 * 54 + 3) / 7 = 381 / 7 kg - 57 8/9 kg = (9 * 57 + 8) / 9 = 521 / 9 kg - 50 4/7 kg = (7 * 50 + 4) / 7 = 354 / 7 kg

2. Add up the amounts sold: - Total amount sold = 381/7 + 521/9 + 354/7 kg

To simplify the calculation, we can find a common denominator for 7 and 9, which is 63: - Total amount sold = (381/7 * 9/9) + (521/9 * 7/7) + (354/7 * 9/9) - Total amount sold = 2709/63 + 3647/63 + 3186/63 kg - Total amount sold = (2709 + 3647 + 3186) / 63 kg - Total amount sold = 9542 / 63 kg

3. Subtract the total amount sold from the initial amount: - Remaining sugar = 298 kg - 9542/63 kg

To calculate the remaining sugar, we need to find a common denominator for 63 and 1: - Remaining sugar = (298 * 63/63) - (9542/63) kg - Remaining sugar = (298 * 63 - 9542) / 63 kg

Now we can calculate the remaining sugar:

Remaining sugar = (298 * 63 - 9542) / 63 kg

Let's calculate the result:

Remaining sugar = (18774 - 9542) / 63 kg Remaining sugar = 9232 / 63 kg

Therefore, the remaining sugar is approximately 146.3492 kg.

Please note that the above calculation is based on the given information and assumes that no additional sugar was brought to the store or sold during the specified period.