Casey takes 6 hours to complete a marathon race, while Zendaya takes 1/3 times longer to cover the same distance. What is the average time the two take to complete to race?
Zendaya takes 1/3 * 6 hours = 
<gadget id="calculator">1/3*6</gadget>
<output>2</output>
2 hours longer to complete the marathon.
To complete the marathon, Zendaya takes 6 hours + 2 hours = 
<gadget id="calculator">6+2</gadget>
<output>8</output>
8 hours.
The combined time the two take to complete the marathon is 8 hours + 6 hours = 
<gadget id="calculator">8+6</gadget>
<output>14</output>
14 hours.
The average number of hours Casey and Zendaya take to complete the marathon is 14 hours / 2 people = 
<gadget id="calculator">14/2</gadget>
<output>7</output>
7 hours/person.

<result>7</result>