Question

If the final amount of money that Ghosh Babu had with him was Rs 100, what was the initial amount he had with him?

• A. 120
• B. 8
• C. 4
• D. 96

Answer 1

The correct option is D

96

The following matrix will help you solve the problem.
$\begin{array}{ccccccc}\text{Game}& \text{Starting Money with}& \text{Ghosh Gives}& \text{Gets}& \text{Dealer Gets}& \text{Gives}& \text{End}\\ & \text{with Ghosh Babu}& & & & & \\ I& 0& 0& 8& 16& 0& -8\\ II& -8& 0& 10& 0& 10& 12\\ III& 12& 0& 6& 6& 0& 12\\ IV& 12& 0& 8& 16& 0& 4\end{array}$
Ghosh Babu's net gain is Rs 4. If after that he has Rs 100 with him, he must have had Rs 96 at the start. Hence, (d) is correct.