SOLUTION: If 3/4 of reserve can be mowed by 4 council workers in 5 hours, what fraction of the reserve can be mowed by 3 workers in 4 hours,assuming they all work at the same rate.

Algebra ->  Numeric Fractions Calculators, Lesson and Practice -> SOLUTION: If 3/4 of reserve can be mowed by 4 council workers in 5 hours, what fraction of the reserve can be mowed by 3 workers in 4 hours,assuming they all work at the same rate.      Log On


   

Question 945775: If 3/4 of reserve can be mowed by 4 council workers in 5 hours, what fraction of the reserve can be mowed by 3 workers in 4 hours,assuming they all work at the same rate.
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
Uniform work rates,
RT=J rate time job.
Think of amount of job as how much reserve.

First part means 4%2Ar%2A5=%283%2F4%29, which gives r, the work rate of any 1 worker.
r=%283%2F4%29%281%2F20%29
highlight_green%28r=3%2F80%29, one worker.

The part for the question, how much of the reserve:
highlight%283%2A%283%2F80%29%2A4=j%29, using j for how much of the reserve.
Simplify.


Understand that the number of workers multiplied by the rate of 1 worker gives the rate of work for that number of workers together.