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# Ok I got one for ya, you MatheMagicians When positive

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Manager
Joined: 02 Jan 2007
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Ok I got one for ya, you MatheMagicians When positive [#permalink]  11 Apr 2007, 13:14
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Ok I got one for ya, you MatheMagicians

When positive integer x is divided by positive integer y, the remainder is 9. If x/y = 96.12, what is the value of y?

A. 96
B. 75
C. 48
D. 25
E. 12

Why does the OA say
B?
I get A
GMAT Instructor
Joined: 04 Jul 2006
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The remainder is 0.12y=9 so 12y=900 ie, y=75
Manager
Joined: 02 Jan 2007
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Ahhh, that was a nice little spell kev
Senior Manager
Joined: 11 Feb 2007
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Kinda late but yea...it's B.

x = ny + 9

x/y = 96.12

so .12 should be what you get when you divide 9 by y.

9/y = 12/100
900/12 = y
y = 75

Manager
Joined: 30 Jun 2006
Posts: 87
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The question says that x is an integer so

x/y = 96.12
or x = 96.12 * y

put the values given in the option. A C E cant give whole number with 96.12.

Try with 75 and 25 and one should arrive at the answer.

Some bit of mental multiplication would easily reveal that 25 also can be opted out.

Hence B
Intern
Joined: 29 Aug 2005
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May be we could deduce a formula for this kind of problems...

Remainder = Value after decimal * denominator (provided 'value after decimal > 0)

In our case
9=0.12*y=>y=75
Senior Manager
Joined: 01 Jan 2007
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Re: PS: x/y..... More Remainder Fun [#permalink]  14 Apr 2007, 01:26
vikramjit_01 wrote:
Ok I got one for ya, you MatheMagicians

When positive integer x is divided by positive integer y, the remainder is 9. If x/y = 96.12, what is the value of y?

A. 96
B. 75
C. 48
D. 25
E. 12

Why does the OA say
B?
I get A

x/y=96.12 and the remainder we get is 9 so .12y=9 therefore y=900/12 = 75. so answere is B.
Re: PS: x/y..... More Remainder Fun   [#permalink] 14 Apr 2007, 01:26
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