Riddle: David is throwing Robert a surprise birthday party but he has to stay within his budget. He spent half of his money plus $2.00 on the cake. Half of what he had left plus $2.00 was spent on balloons and streamers. Then he spent half of what he had left plus $1.00 on candy. Now he is out of money, how much did he start with?
Answer: 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.
$2.00 on candy
$6.00 on Balloons and Streamers
$12.00 on the cake
Total of $20.00.
Share:
Halloween Riddles are hand picked Halloween Riddles for use by teachers in the classroom and for home school lessons. This halloween riddles quiz provides the option to be downloaded as a PDF or printable directly from the Halloween Riddles quiz page.
Thanksgiving Riddles are hand picked Thanksgiving Riddles for use by teachers in the classroom and for home school lessons. This thanksgiving riddles quiz provides the option to be downloaded as a PDF or printable directly from the Thanksgiving Riddles quiz page.
Christmas Riddles are hand picked Christmas Riddles for use by teachers in the classroom and for home school lessons. This christmas riddles quiz provides the option to be downloaded as a PDF or printable directly from the Christmas Riddles quiz page.
