working 5 hours a day Suresh 10 type a book in 27 days how many hours a day should he work to finish the same work in 9 days

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The correct question is:
working 5 hours a day Suresh  type a book in 27 days. How many hours a day should he work to finish the same work in 9 days?
$$\begin{gathered} \mathrm{Let} \mathrm{the} \mathrm{working} \mathrm{hours} = \mathrm{h} \\ \mathrm{and} \mathrm{days} \mathrm{required} \mathrm{to} \mathrm{complete} \mathrm{a} \mathrm{book} =\mathrm{d} \\ \mathrm{Here} {\mathrm{h}}_1=5 \mathrm{hr}/\mathrm{day} , {\mathrm{h}}_2=?, {\mathrm{d}}_1=27\mathrm{days}, {\mathrm{d}}_2=9\mathrm{days} \\ \mathrm{A}.\mathrm{T}.\mathrm{Q} \\ {\mathrm{h}}_1\times {\mathrm{d}}_1={\mathrm{h}}_2\times {\mathrm{d}}_2 \\ 5\times 27={\mathrm{h}}_2\times 9 \\ {\mathrm{h}}_2=\frac{5\times 27}{9} \\ {\mathrm{h}}_2=15 \mathrm{hrs}/\mathrm{day} \\ \mathrm{So}, \mathrm{he} \mathrm{should} \mathrm{work} 15 \mathrm{hours} \mathrm{a} \mathrm{day} \mathrm{to} \mathrm{finish} \mathrm{the} \mathrm{same} \mathrm{work} \mathrm{in} 9 \mathrm{days} \end{gathered}$$
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