Asked by Kevin Kirkpatrick
Sam can sort 4000 pieces of mail in 5 hours. With a co-worker they can sort 4000 pieces of mail in 3 hours. How long will it take his co-worker to sort 2000 pieces of mail.
Answers
Answered by
Steve
consider 4000 pieces one "job". The classic work problem now becomes
1/5 + 1/x = 1/3
x = 15/2
So, he can sort 2000 mails (1/2 job) in 15/4 hour
1/5 + 1/x = 1/3
x = 15/2
So, he can sort 2000 mails (1/2 job) in 15/4 hour
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