Question

На новогодней гирлянде синих лампочек в 3 раза меньше,чем красных,но в 2 раза больше,чем зеленых.сколько лампочек каждого вида на новогодней гирлянде,если всего на ней 73 лампочка?

Answer 1

Обозначим З - количество зеленых лампочек, С - синих, К - красных
Пусть З=х, тогда
С=2х
К=3*С=3*2х=6х

З+С+К=73
х+2х+6х=73
9х=73
х=73:9 - НАЦЕЛО НЕ ДЕЛИТСЯ!
может быть, в условии было 72, а не 73?

Answer 2

Problem Analysis

We are given the information that on a New Year's garland, there are three times fewer blue bulbs than red bulbs, and two times more blue bulbs than green bulbs. We need to determine the number of bulbs of each color on the garland, given that there are a total of 73 bulbs.

Solution

Let's assume the number of blue bulbs is x. According to the given information, there are three times fewer blue bulbs than red bulbs, so the number of red bulbs is 3x. Additionally, there are two times more blue bulbs than green bulbs, so the number of green bulbs is x/2.

The total number of bulbs on the garland is given as 73. Therefore, we can write the equation:

x + 3x + x/2 = 73

Simplifying the equation:

2x + 6x + x = 146

9x = 146

Solving for x:

x = 146/9 ≈ 16.22

Since we cannot have a fraction of a bulb, we need to round the number of blue bulbs to the nearest whole number. Therefore, the number of blue bulbs is 16.

Using this value, we can find the number of red bulbs (3x) and green bulbs (x/2).

Red bulbs = 3 * 16 = 48

Green bulbs = 16/2 = 8

Therefore, on the New Year's garland, there are 16 blue bulbs, 48 red bulbs, and 8 green bulbs.

Answer

On the New Year's garland, there are 16 blue bulbs, 48 red bulbs, and 8 green bulbs.