Question

Папа принёс с базара арбуз. За ужином он съел 1/4 часть арбуза, а мама съела 1/5 часть арбуза, а сын 1/6 часть арбуза. После этого осталось ещё 2кг. 300г. Сколько весил арбуз?

Answer 1

1/4+1/5+1/6=15/60+12/60+10/60=37/60 арбуза съели
1-37/60=23/60 арбуза осталось  2,3кг
2,3:23/60=2,3*60:23=6кг весь арбуз

Answer 2

Calculation of the Weight of the Watermelon

To calculate the weight of the watermelon, we need to determine the fraction of the watermelon that each family member ate and the remaining weight of the watermelon.

Let's denote the weight of the watermelon as W.

According to the information given: - The father ate 1/4 of the watermelon. - The mother ate 1/5 of the watermelon. - The son ate 1/6 of the watermelon.

After they ate their portions, there was 2 kg 300 g of the watermelon remaining.

To calculate the weight of the watermelon, we can subtract the sum of the fractions eaten by each family member from the total weight of the watermelon.

The equation can be written as:

W - (1/4)W - (1/5)W - (1/6)W = 2 kg 300 g

Simplifying the equation:

W - (5/20)W - (4/20)W - (3/20)W = 2 kg 300 g

W - (12/20)W = 2 kg 300 g

**W - (3/5)W =