I guess the quickest way to calculate it is by converting everything to fractions. Keeping one in fraction and another in decimal takes way too much time (Atleast for me)
Needed -
\(\frac{9}{2} = \frac{x}{100} * 1.125\)
\(\frac{9}{2} = \frac{x}{100} * (1+ \frac{1}{8})\)
\(\frac{9}{2} = \frac{x}{100} * \frac{9}{8}\)
\(x = 400\)
Answer Choice : E
...
Needed -
\(\frac{9}{2} = \frac{x}{100} * 1.125\)
\(\frac{9}{2} = \frac{x}{100} * (1+ \frac{1}{8})\)
\(\frac{9}{2} = \frac{x}{100} * \frac{9}{8}\)
\(x = 400\)
Answer Choice : E
...


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