ps 500 test23 # 12

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ps 500 test23 # 12

by dunkin77 » Tue Apr 17, 2007 10:22 am
Hi,

The answer is C) but could not figure out why. Can anyone explain pls?
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by Cybermusings » Tue Apr 17, 2007 11:36 am
This one is fairly simple if you use the unitary method logic....

n books ------ $50

1 book ------- 50/n

Thus n-1 books ------ 50 *(n-1)/n