There were 120 entries for the Rogers County Library annual writing competition, and 12 of them were picked to be published. What percent of the entries were picked to be published

10%

Step-by-step explanation:

In order to calculate the percentage of the entries that were picked we need to divide the number of picked entries to be published by the total number of entries that were received during the competition like so...

12 / 120 = 0.1

Now we simply multiply this value by 100 in order to turn this into a percentage value

0.1 * 100 = 10%

Therefore, we can now see that only 10% of the total entries were picked to be published.

it's equivalent, so we can say that its equal.

let's call the denominator x and the numerador is 18 less then denominator, x - 18.

multiply

2.x = 5.(x - 18)

2x = 5x - 90

90 = 5x - 2x

90 = 3x

x = 90/3

x = 30

so: