Question

An array has twice as many columns as rows. The dividend for a division sentence that describes the array is 18. How many rows and columns does the array have?

Answer 1

The array has 9 rows and 18 columns.

Explanation:

Let the number of rows of the array = x

Then, the number of columns = 2x

The division sentence that describes this situation is:

`(2x)/(2) =x`

Here, the dividend is 2x.

But, it is given that the dividend is 18.

So, 2x = 18 and

`(2x)/(2) =(18)/(2)`

x = 9

Hence, the array has 9 rows and 18 columns.