Question 1173461
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Hi
30 minutes watching TV and 3 hours practicing his typing on the computer.  
The time he spent watching TV was what percent 
of the time he spent working on the computer? 17%
3hr = 180min
{{{30min/180min = 1/6}}}
  1/6 = .16667  
In percent form: 17%  to the nearest whole percent.
  Wish You the Best in your Studies.