SOLUTION: 6 men can do a work in 15 days. How many days it will take for 10 men to do the same work? Please, illustrate

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Question 829028: 6 men can do a work in 15 days. How many days it will take for 10 men to do the same work? Please, illustrate
Answer by josgarithmetic(39618) About Me  (Show Source):
You can put this solution on YOUR website!
Men______________Days for 1 job
6________________15
1________________15*6, because each man is assumed to have the same rate as another man. One man needs 6 times more time than 6 men.

The one-man rate of work is 1 job per 90 days.
R%2At=j
R rate in jobs per day
t time in days
j The quantity of job or jobs

Question about t when 10 men instead of 1 man:
Rt=j
j=1
t=j%2FR
t=1%2F%2810%281%2F90%29%29
highlight_green%28t=1%2F%2810%2F90%29%29
highlight%28t=9%29
90 days.