Section: Arithmetic Reasoning

11) A new cancer treatment provides a 50% success rate for patients with lung tumors. Lung tumors make up 10% of all cancer patients. What percentage of all cancer patients will this new drug work on?

1. 5%
2. 20%
3. 50%
4. 80%
5. 95%

A simple way to solve this is to multiply the two percentages. Therefore, multiply .50 * .10 and you get .05 or 5%.