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OG QUESTION: If x+y/xy=1, then y= ??

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by MBA.Aspirant » Mon Jul 18, 2011 5:45 pm
x+y/xy=1

x+y = xy

x = xy-y = y(x-1)

y = x/x-1
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by Vivek Murari » Mon Jul 18, 2011 8:09 pm
Ans is option A.

x+y/xy =1
x+y = xy
x = xy-y
x = y (x-1)
y = x/(x-1)
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by Anurag@Gurome » Mon Jul 18, 2011 8:43 pm
factor26 wrote:If x+y/xy=1, then y=
a) x/x-1

b) x/x+1

c)x-1/x

d) x+1/x

e) x

OG ANSWER IS D. CAN SOMEONE PLEASE EXPLAIN HOW TO SOLVE THIS PROBLEM? THANKS!
x + y/ xy = 1
x + y = xy
xy - y = x
y(x - 1) = x
y = x/(x - 1)

The correct answer is A.
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by factor26 » Tue Jul 19, 2011 2:00 am
WHOOPS!! I MISPOSTED THE ANSWER CHOICES!! GOOD CATCH ALL!!
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