Question : If 42 persons consume 144 kg of wheat in 15 days, how many days will 30 persons consume 48 kg of wheat?
Option 1: 8 days
Option 2: 7 days
Option 3: 12 days
Option 4: 6 days
Correct Answer: 7 days
Solution : Given: 42 persons can consume 144 kg of wheat in 15 days. Let in $x$ days 30 persons consume 48 kg of wheat. We know that $\frac{M1D1}{W1}=\frac{M2D2}{W2}$ According to the question, $\frac{42×15}{144}=\frac{30×x}{48}$ ⇒ $x=7$ Hence, the correct answer is 7 days.
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