<prompt> Translate the following text to EnglishWanamaker alidai kuwa ni lazima kulipa mara mbili kwa kufikia nusu ya haki ya watu, kwa hivyo matumizi yake ya jumla ya matangazo yatashuka na sio kuongezeka.  <response>: Unless Wanamaker was willing to pay double for reaching the right half of the people, his total ad spending would go down and not up. 