I am thinking of a number. It is more than 80, but less than 200. When I divide it by 2 and then multiply it by 3, it would be 150. What is my number?

Step-by-step explanation:

The answer is 100. I know this because 100/2=50, and 50 x 3 = 150. It's also less than 200 and greater than 80.

if you are saying purchasing 3 social media ads and one newspaper ad counts as one purchase then there are:

6 purchases

if you are asking how many of each then:

18 social media ads

6 newspaper ads