Question

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The circle graph shows the percent of time different people took turns driving during a 20-hour road trip.




How many hours did Dan drive?

Answer 1

Answer: 7.4 hours

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Step-by-step explanation:

Add up the percentage values:

25+20+6+6+6 = 63

This means 63% of the trip was driven by anyone but Dan. That must mean 100-63 = 37% of the trip is how much Dan drove.

Apply this percentage to the 20 hour duration

37% of 20 = 0.37*20 = 7.4 hours represents how long Dan drove.

extra notes:

• 7.4 hours = 7 hours, 24 minutes because 0.4 hours = 0.4*60 = 24 minutes
• 7.4 hours = 7 hrs + 24 min = 7*60+24 = 444 minutes