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NOT a value b??

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NOT a value b??

by ogbeni » Thu Aug 27, 2009 12:36 pm
If a=1 and (a-b)/c=1, which of the following is NOT a value of b?

a)-2
b)-1
c)0
d)1
e)2

looks easy but I bombed it and can't figure it out!
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by bharathh » Thu Aug 27, 2009 12:46 pm
b cannot be 1 as the numerator would be 0 ...

(1-1)/c = 0/c != 1
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by ogbeni » Thu Aug 27, 2009 12:50 pm
Thanks - that's what I get for just thinking algebgraically and not with common sense!!! I wasted so much time on this question too!! Arghh!!!
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