Hello,
Could anyone please help me solve this problem?
If it takes 6 identical printing presses exactly 4 hours to print 5,000 newspapers, how long will it take 3 of these presses to print 3,000 newspapers?
Thanks,
Cindy
800 Score Question
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- Target2009
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Ans must be 4hr 48 Min.cdiaz4 wrote:Hello,
Could anyone please help me solve this problem?
If it takes 6 identical printing presses exactly 4 hours to print 5,000 newspapers, how long will it take 3 of these presses to print 3,000 newspapers?
Thanks,
Cindy
But you can deal with such question thru ball parking.
6 press 4 hr 5000 NP
3 press if same hr ( 4hr) 2500 NP so to print 3000NP 3 press will take slightly more than 4 hrs.
Regards
Abhishek
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Abhishek
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- Tani
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If it takes 6 presses 4 hours to do 5,000 papers, it would take 3 presses 8 hours to print 5,000.
to print 3,000 instead of 5,000 it would take just 3/5 of 8 hours or 4 and 4/5 hours = 4 hours 48 minutes.
to print 3,000 instead of 5,000 it would take just 3/5 of 8 hours or 4 and 4/5 hours = 4 hours 48 minutes.
Tani Wolff
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Great post! Thanks Tani.Tani Wolff - Kaplan wrote:If it takes 6 presses 4 hours to do 5,000 papers, it would take 3 presses 8 hours to print 5,000.
to print 3,000 instead of 5,000 it would take just 3/5 of 8 hours or 4 and 4/5 hours = 4 hours 48 minutes.
Regards,
Pranay
Pranay
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cdiaz4 wrote:Hello,
Could anyone please help me solve this problem?
If it takes 6 identical printing presses exactly 4 hours to print 5,000 newspapers, how long will it take 3 of these presses to print 3,000 newspapers?
Thanks,
Cindy
In the present question, time taken in the introductory task is 4 hours. When efficiency is halved, time taken doubles; and when the task is made 3/5, time taken becomes 3/5 as well.
Hence the time taken in the changed conditions = 4 × 2 × 3/5 = 4.8 hours
= [spoiler]4 hours 48 minutes[/spoiler]
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Sanjeev K Saxena
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