Question

На новогодней ёлке висят синие, жёлтые, красные и зелёные шары. Всего их 20. Красных меньше, чем синих на 5 штук, а жёлтых больше, чем синих на 5 штук. Сколько зелёных шаров на ёлке?

Answer 1

Зелёных всего должно быть-5

Answer 2

Синих - 5
Желтых - 10
Красных - 0
Зеленых - 5

Answer 3

Calculating the Number of Green Ornaments

To calculate the number of green ornaments on the tree, we can use the information provided about the total number of ornaments, the difference in quantity between the different colored ornaments, and the total number of ornaments.

Given: - Total number of ornaments = 20 - Red ornaments are 5 less than blue ornaments - Yellow ornaments are 5 more than blue ornaments

Let's denote: - Number of blue ornaments as B - Number of red ornaments as R - Number of yellow ornaments as Y - Number of green ornaments as G

We can express the relationships between the different colored ornaments in terms of B and then solve for the number of green ornaments.

Calculations

1. Total Number of Ornaments - The total number of ornaments is the sum of all the different colored ornaments: - Total = B + R + Y + G - Given: Total = 20

2. Relationships Between Different Colored Ornaments - Red ornaments are 5 less than blue ornaments: - R = B - 5 - Yellow ornaments are 5 more than blue ornaments: - Y = B + 5

3. Substitute and Solve - Substitute the expressions for R and Y into the total equation: - B + (B - 5) + (B + 5) + G = 20 - Simplify and solve for G: - 3B + G = 20

4. Determine the Number of Green Ornaments - Since we have one equation with two unknowns, we cannot determine the exact values of B and G. However, we can express G in terms of B: - G = 20 - 3B

Conclusion

Based on the given information, we can determine the relationship between the number of green ornaments and the number of blue ornaments, but we cannot determine the exact number of green ornaments without additional information about the number of blue ornaments.