Question

На прилавке стояли дыни. Сначала с прилавка сняли 25% всех дынь, а потом 70% оставшихся дынь. После этого на прилавке осталось 27 дынь. Сколько дынь было на прилавке первоначально? Пожалуйста помогите!!!

Answer 1

Problem Analysis

We are given that there were some melons on a counter. First, 25% of all the melons were removed from the counter, and then 70% of the remaining melons were removed. After these two removals, there were 27 melons left on the counter. We need to determine the initial number of melons on the counter.

Solution

Let's assume the initial number of melons on the counter is x.

According to the problem, the following events occurred: 1. 25% of all the melons were removed from the counter. - This means that 75% of the melons remained on the counter. - So, after the first removal, there were 0.75x melons left on the counter.

2. 70% of the remaining melons were removed. - This means that 30% of the melons remained on the counter. - So, after the second removal, there were 0.3 * 0.75x melons left on the counter.

According to the problem, there were 27 melons left on the counter after these two removals. Therefore, we can set up the following equation:

0.3 * 0.75x = 27

Now, we can solve this equation to find the value of x.

Calculation

Let's solve the equation:

0.3 * 0.75x = 27

0.225x = 27

x = 27 / 0.225

x ≈ 120

Answer

The initial number of melons on the counter was approximately 120.

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