Question

На выставке-продаже до обеда было продано 21 картин,что составило 3/11 выставленных для продажи картин,а после обеда продали 5/7 остатка.Оставшиеся на выставке картины распределили поровну между пятью магазинами.Сколько картин получил каждый магазин?

Answer 1

21/3*11=77 всего
77-21=56 остаток
56/7*5=40 продали
56-40=16 осталось
16/5=3,2 картины каждый магазин

Answer 2

Problem Analysis

We are given the following information: - 21 paintings were sold before lunch, which is 3/11 of the total number of paintings. - After lunch, 5/7 of the remaining paintings were sold. - The remaining paintings were distributed equally among five stores.

We need to determine how many paintings each store received.

Solution

Let's break down the problem step by step:

1. Calculate the total number of paintings: - We know that 21 paintings were sold before lunch, which is 3/11 of the total number of paintings. - Let's assume the total number of paintings is represented by 'x'. - We can set up the equation: (3/11) * x = 21. - Solving this equation will give us the value of 'x', which represents the total number of paintings.

2. Calculate the number of paintings remaining after lunch: - We know that after lunch, 5/7 of the remaining paintings were sold. - The number of remaining paintings can be calculated as: (1 - 5/7) * x.

3. Distribute the remaining paintings equally among five stores: - Divide the number of remaining paintings by 5 to determine how many paintings each store received.

Let's calculate the solution using the given information.

Calculation

1. Calculate the total number of paintings: - (3/11) * x = 21 - Multiplying both sides by (11/3) to isolate 'x': - x = 21 * (11/3) - x ≈ 77

2. Calculate the number of paintings remaining after lunch: - Remaining paintings = (1 - 5/7) * 77 - Remaining paintings ≈ (2/7) * 77 - Remaining paintings ≈ 22

3. Distribute the remaining paintings equally among five stores: - Each store will receive 22 / 5 ≈ 4 paintings.

Answer

Each store received approximately 4 paintings.

Please let me know if I can help you with anything else.