SOLUTION: The number of persons needed to do a job varies directly as the amount of work to be done and inversely as the time in which the job must be done.If 3 people can mow 300m squared o
Algebra.Com
Question 451567: The number of persons needed to do a job varies directly as the amount of work to be done and inversely as the time in which the job must be done.If 3 people can mow 300m squared of grass is 0.5 h , how long will it take 7 people to mow 7000m squared of grass?
Answer by jorel1380(3719) (Show Source): You can put this solution on YOUR website!
300m/3 people=100m/person per 1/2 hour or 200m/person per hour.
7000m/(7 people x 200m/person per hour)=7000/1400=5 hours..
RELATED QUESTIONS
The amount of time needed to complete a job, t, varies inversely with the number of... (answered by josgarithmetic)
Heat generated by a stove element varies directly as the cube of the voltage and... (answered by timofer,ikleyn)
The number of workers n needed to clean a stadium after a game varies inversely as the... (answered by stanbon)
Express each statement as an equation where k represents the constant of variation.
1.... (answered by Cromlix)
The amount A paid to a work crew varies jointly as the number of persons working N and... (answered by josmiceli)
The time required to complete a job varies inversely as the number of people working. It... (answered by fractalier)
the time t required to do a certain job varies inversely as the number of people in... (answered by ankor@dixie-net.com)
Suppose that the amount of time it takes to build a highway varies directly with the... (answered by lwsshak3)
Suppose that the amount of time it takes to build a highway varies directly with the... (answered by ikleyn)