1)Three people who work full time are to work together on a project, but their total time on the project is to be equivalent to that of only one person working full time. If one of the people is budgeted for _ of his time to the project and a second person for 1/3 of her time, what part of the third worker’s time should be budgeted to this project?

-answer is 1/6. I dont understand this either. I thought it was 1/3. since 3 people using 1/3 each of their time would equal 1 full time? I have no idea why there is a "_" in the question.


I don't understand it either.

But with the book answer given, (1/6 for the 3rd person), we can play backwards to determine that "-" for the 1st person.

"-" +1/3 +1/6 = 1
"-" = 1 -1/3 -1/6 = 3/6 = 1/2

So, did the author of the problem forget to write 1/2 in lieu of that "-"?

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