One of my co-teachers pointed out something wrong in an ad in the Philippine Daily Inquirer today. On page D-3 of today's edition was a one-and-a-half page full-color ad for Enfakid. On the fold covering half of the page was the sum 9 + 5 = 14. But upon opening the fold, one will see the equation 9 + 5 x 2 - (7 x 2) = 14, with the ad claiming that Enfakid will help nourish the brain.
Unfortunately, whoever made the ad probably didn't consult a math teacher. If one follows the PEMDAS (parentheses, exponent, multiplication, division, addition, subtraction) hierarchy, the actual answer is 5. Check it out.
To correct the equation, it should read (9 + 5) x 2 - (7 x 2) = 14 or 9 + 5 x 2 - (7 x 2) = 5.
Whoever made this ad is going to be in hot water. Because of the erroneous equation, how can one believe that Enfakid will be effective?