The link to our Math Center is here: grecenter.org/math

I already explained how to use alligation method for solving GRE-GMAT math problems in my Bangla video in Youtube. The video is once again embedded here:

## Which number to choose while multiplying fractions?

This refers to the discussion at 9.01 minute where I chose a desired value 9.25 from two initial values of 12 and 4. It looked like this:

And we determine our numbers as:

\begin{matrix} ady & – & cby \\ – & xbd& – \\ \left| cby-xbd \right| & – & \left| ady-xbd\right| \end{matrix}

Hope I could clarify this specific question. If you still have any confusion please comment below.

Sincerely,

Mamoon Rashid, PhD
CEO of GRE Center