FREE Burger King Whopper w/ Any Purchase Posted On April 20, 2020 Get a FREE Burger King Whopper w/ Any Purchase (Just Solve a Math Problem)!Through April 20th, head over to the Burger King app where you can score a FREE Whopper with any purchase if you can solve the math problem!Download the Burger King app in the iTunes App Store or Google Play Scroll down on the home page Click “How Much Do You Know?” Solve the problem – Hint: the answer to the math problem is 5 It will then take you to a screen that says “You Passed! Redeem your offer in the BK App”Hit “Redeem Now” It will then take you to the “Offers” page which will have your FREE Whopper coupon. (exp. 4/21)Other possible answers The periodic table one is: Berkelium The literature one is: Life is a tale told by an idiot, full of sound and fury, signifying nothing.