This one is best solved working backwards, the last part David spent half of what was left plus $1.00 on candy and then was out of money. That means he must have spent $2.00 on Candy as $1.00 was half of what he had using the same logic backwards: $2.00 on candy $6.00 on Balloons and Streamers $12.00 on the cake Total of $20.00.
These logic riddles will help build your lateral thinking. Twist your brain and see if you can figure them out. Find one to challenge your most logical friends. We will be adding some of the classic grid pattern logic puzzles soon. See what we got and see what you can figure out. Good Luck!