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प्रश्न
18 men can reap a field in 35 days. For reaping the same field in 15 days, how many men are required?
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उत्तर
Let the number of men required to reap the field in 15 days be x.
| Number of days | 35 | 15 |
| Number of men | 18 | x |
\[\text{ Since the number of days and the number of men required ro reap the field are in inverse variation, we have: } \]
\[35 \times 18 = 15 \times x\]
\[ \Rightarrow x = \frac{35 \times 18}{15}\]
\[ = 42\]
\[\text{ Thus, the required number of men is 42 } .\]
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