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Bunuel
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Apply the following Theorem:

Dividend = Divisor * quotient + Remainder (theorem)

if we simplify the value of C/D = 9.75 which can be written as 9+3/4
we can write it as
C= 9*D+ 3/4 d

now, to satisfy the general rule stated above we have to make D= 4,
which will result in C=39
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Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

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