An officer divided his 35 hour work week as follows:
of his time was spent in sending mails
of his time in filing letters
of his time in reception work
The rest of his time is spent in messenger work.
What is the percent time spent on messenger work?
The Usual Method
Total time spent in sorting mail, filing letters and reception work = hours.
Hence time spent for messenger work = 35 – 29.5 = 5.5 hours.
Hence % time spent on messenger work =
Estimated Time to arrive at the answer = 60 seconds.
We already know that %, % and %.
Hence total time spent (in % terms) = 20% + 50% + 14% = 84% on sorting, filing and reception work.
Hence time spent on messenger work = 100 – 84 = 16%
Estimated Time to arrive at the answer = 10 seconds.