Wednesday

August 20, 2014

August 20, 2014

Posted by **Celina** on Monday, May 28, 2012 at 11:11am.

- Mathematics -
**Reiny**, Monday, May 28, 2012 at 11:20amjob requires 12(6) = 72 man-hours

They work for 1 hour, so 12 man-hours are used up, leaving 60 man-hours for the job to be done

Second shift has 20 men,

so time needed to complete the job

= 60 man-hours/20 men

= 3 hours

(the above applies only in theory, it does not apply to city workers or the like. Doubling the number of men on a job in practise does not cut the required time in half. , (this is supposed to be a joke) )

- Mathematics -
**Celina**, Monday, May 28, 2012 at 11:31amThanks!

**Related Questions**

maths, proportion - twelve men take 6 hours to finish a piece of work. after the...

Math - 3 men and 4 boys can do a piece of work in14 days , while 4 men and 6 ...

math - two men worked 8 hours each and they built 32 frames for sheds. what is ...

9th grade - two men worked 8 hours each and they built 32 frames for sheds. what...

work and time - If 15 men or 24 women or 36 boys can do a piece of work in 12 ...

math - 10 men can do a piece of work in 10 days.how many days can 100 men take ...

Probability - This is an example question, but I'm not sure how my instructor ...

mathematics - it takes 12 men to make 12 tables in 9 hours. how long will it ...

Math - If52 men can do a piece of work in 35days in how many days 28 men will do...

math - 10. A house painter can finish a house in 6 hours. His partner can finish...