question_answer

If 42 persons consume 144 kg of wheat in 15 days, then in how many days will 30 persons consume 48 kg of wheat?

A)  8 days            

B)  7 days

C)  12 days          

D)       6 days

Correct Answer: B

Solution :

                 \[\therefore \]    \[\left. \begin{matrix}    \,30\,\,\,\,\,:\,\,\,42  \\    144\,\,:\,\,48  \\ \end{matrix} \right\}:\,\,:\,15:x\]             \[\Rightarrow \]            \[30\times 144\times x\]                         \[=42\times 48\times 15\]             \[\Rightarrow \]            \[x=\frac{42\times 48\times 15}{30\times 144}\] = 7 Days