SOLUTION: if 800 people can do a piece of work in 80 days.after 5 days 50 people left.How much more time will they take to complete the work?

Question 814165: if 800 people can do a piece of work in 80 days.after 5 days 50 people left.How much more time will they take to complete the work?
Answer by josgarithmetic(39617) (Show Source): You can put this solution on YOUR website!
Uniform Rates Situation,
R is work rate in jobs per day
d is how many days of time
j is the quantity of jobs done

You want to find the one-man work rate.
800 people do a job in 80 days;
1 person does this one job in 800*80 days. This is 64000 days.
You could express this rate as job per day.

The described situation is in two time quantities, each having a different number of people working. You have 5 days with 800 people, and d days with 750 people. These two time periods were passed to accomplish 1 whole job.

Solve for the variable, d, in this equation describing the situation:

Definitely, simplify before starting.
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