Thank you for using the timer!
We noticed you are actually not timing your practice. Click the START button first next time you use the timer.
There are many benefits to timing your practice, including:
Working simultaneously and independently at an identical [#permalink]
30 Oct 2007, 05:24
0% (00:00) correct
0% (00:00) wrong based on 0 sessions
This topic is locked. If you want to discuss this question please re-post it in the respective forum.
Working simultaneously and independently at an identical constant rate, 4 machines of a certain type can produce a total of x units of product P in 6 days. How many of these machines, working simultaneously and independently at this constant rate, can produce a total of 3x units of product P in 4 days?
In all work problems, i prefer to get an equation for work done per day per machine(or human)....
in this case...in 6 days, 4 machines produce x units....
therefore in 1 day, 4 machines produce (x/6) units..
therefore in 1 day, 1 machine produces (x/24) units....
now to produce 3x machines in 4 days, you need to produce (3x/4) per day...
therefore (number of machines required) * (units produced per machine per day) = (3x/4)..
therefore...number of machines required =(3x/4) / (x/24)=18....