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प्रश्न
30 persons can reap a field in 17 days. How many more persons should be engaged to reap the same field in 10 days?
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उत्तर
∵ 30 persons can reap a field in 17 days.
1 person can reap the same field in 30 × 17 i.e. 510 days.
In 10 days, the number of persons required = `510/10` = 51 persons.
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