The width of the picture is 1.5 times less than its length. The resolution of the picture is 6 megapixels, how many

The width of the picture is 1.5 times less than its length. The resolution of the picture is 6 megapixels, how many pixels are located across the width of the picture?

Let’s denote the width of the picture as X.
By the condition of the problem, the width is 1.5 times less than the length. Then the length of the picture is X: 1.5.
There are 1,000,000 pixels in one pixel.
The whole picture is a rectangular matrix consisting of 6,000,000 pixels.
The number of pixels in a picture is obtained by multiplying its length by its width.
It turns out that X * X: 1.5 = 6,000,000.
Let’s find the unknown X:
X ^ 2 = 9,000,000;
X = square root of 9,000,000;
X = 3000.
It turned out that the width of the picture is 3000 pixels, and the length is 3000: 1.5 = 2000.
Checking: 3000×2000 = 6000000 = 6 megapixels.