How can you get your sale to double?

American learning math company McGraw Hill surveyed 600 companies and their advertising spend in the 1980s. An increase in the advertising budget in most cases resulted in a proportional increase in sales. In times of crisis, they even noticed that a 100% increase in advertising spend yielded a 256% increase in sales. Because the competition invested less and was less present in the advertising market, their efforts gained greater visibility and thus impact. Advertise and do it in a crisis.