Question

Перед представлением в цирк для продажи было заготовлено некоторое количество шариков Перед началом представления было продано 3/8 всех воздушных шариков, а в антракте ещё 15 штук после осталось четверть всех шариков. сколько шариков было первоначально?

Answer 1

Х- всего шариков
⅜х - продали
х-⅜х-15=¼х
х-⅜х-¼х=15
8/8х-⅜х-2/8х=15
⅜х=15
х=15*8:3
х=40

Answer 2

Problem Analysis

We are given the following information: - Before the circus performance, a certain number of balloons were prepared for sale. - Before the start of the performance, 3/8 of all the balloons were sold. - During the intermission, an additional 15 balloons were sold, leaving a quarter of all the balloons remaining.

We need to determine the initial number of balloons that were prepared for sale.

Solution

Let's assume the initial number of balloons is represented by the variable x.

According to the given information: - Before the start of the performance, 3/8 of all the balloons were sold. This means that 5/8 of the balloons remained. - During the intermission, an additional 15 balloons were sold, leaving a quarter of all the balloons remaining. This means that 3/4 of the balloons remained.

We can set up the following equation to represent the given information: 5/8 * x - 15 = 3/4 * x

To solve for x, we can simplify and solve the equation: 5/8 * x - 15 = 3/4 * x Multiply both sides of the equation by 8 to eliminate the fractions: 5x - 120 = 6x Subtract 5x from both sides: -120 = x

Therefore, the initial number of balloons that were prepared for sale was -120.

However, it is important to note that a negative number of balloons does not make sense in this context. It is possible that there was an error in the given information or in the calculations.

Please double-check the information provided or provide additional details if available.