3people need to work together full time , one is only able to do 1/2 the other is able to do 1/3. How much shoud the third person work to complete full time

Question

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Answer 1

let x is the work the third person has to do to complete with the others the whole work.

then we have  1/2 + 1/3 + x = 1   so. 5/6 + x = 1    x = 1 - 5/6 = 1/6

so the third must do the 1/6 of the work

Answer 2

Consider the full hours is 8 hours, that is 480 minutes. the first one does 1/2 work ie, 4 hours or 240 minutes, then the second one did 1/3 work that is 160 minutes. then the last one have to do 480-(240+160)=480-400=80 minutes. in hours 1 hour and 20 minutes. the solution for essays are available in buy essay online services, which will help you to enhance your accademic life.
 

Comments

So complete the answer! 80 minutes is 80/480=1/6 of the work. Any essay on mathematics should contain the advice: read the question properly!