This question is equivalent to asking one to maximize the value of a fraction of the form $\frac{m}{n}$, and to do so we should choose to make $m$ as large as possible, and $n$ as little as possible, so that the resulting fraction has the greatest possible value. Does this make sense?
Vidhi shah says
Hi could you explain the basic of why the numerator should be maximize and denominator minimize
GMAT Quantum says
Hi Vidhi,
This question is equivalent to asking one to maximize the value of a fraction of the form $\frac{m}{n}$, and to do so we should choose to make $m$ as large as possible, and $n$ as little as possible, so that the resulting fraction has the greatest possible value. Does this make sense?
Dabral