Question

Реши задачу. В магазин привезли 10 ц винограда. До обеда продали 2/8 всего винограда, а после обеда 2/5 остатка. Сколько винограда осталось продать?

Answer 1

1)10:2*8=40(кг)-продали винограда до обіду;

2)40:5*2=16(кг)продали після обіду;

3)40+16=56(кг)-азом;

4)1000-56=944(кг)-залишилося продати

 

 Відповідь:944кг залишилося продати

 

 

 

 

 

Answer 2

Problem Analysis

To solve this problem, we need to calculate the amount of grapes that are left to be sold. We know that 10 cwt (hundredweight) of grapes were brought to the store. Before lunch, 2/8 of the total grapes were sold, and after lunch, 2/5 of the remaining grapes were sold. We need to find the amount of grapes that are left to be sold.

Solution

Let's break down the problem step by step:

1. Calculate the amount of grapes sold before lunch: - 2/8 of the total grapes were sold. - To find the amount, we multiply the total grapes by 2/8. - Amount sold before lunch = (2/8) * 10 cwt.

2. Calculate the remaining grapes after lunch: - After lunch, 2/5 of the remaining grapes were sold. - To find the remaining grapes, we subtract the amount sold before lunch from the total grapes. - Remaining grapes = Total grapes - Amount sold before lunch. - Then, we multiply the remaining grapes by 2/5 to find the amount sold after lunch. - Amount sold after lunch = (2/5) * Remaining grapes.

3. Calculate the amount of grapes left to be sold: - To find the amount of grapes left to be sold, we subtract the amount sold after lunch from the remaining grapes. - Grapes left to be sold = Remaining grapes - Amount sold after lunch.

Let's calculate the values step by step:

1. Calculate the amount of grapes sold before lunch: - Amount sold before lunch = (2/8) * 10 cwt. - Simplifying the fraction: (2/8) * 10 cwt = (1/4) * 10 cwt = 2.5 cwt.

2. Calculate the remaining grapes after lunch: - Remaining grapes = Total grapes - Amount sold before lunch. - Remaining grapes = 10 cwt - 2.5 cwt = 7.5 cwt. - Amount sold after lunch = (2/5) * Remaining grapes. - Amount sold after lunch = (2/5) * 7.5 cwt = 3 cwt.

3. Calculate the amount of grapes left to be sold: - Grapes left to be sold = Remaining grapes - Amount sold after lunch. - Grapes left to be sold = 7.5 cwt - 3 cwt = 4.5 cwt.

Answer

The amount of grapes left to be sold is 4.5 cwt.

Please note that the above solution assumes that the grapes are sold in the same unit (cwt) as they were brought to the store. If the unit is different, the calculations would need to be adjusted accordingly.

Let me know if you need any further assistance!