A factory requires 42 machines to produce a given number of articles in 63 days.How many machines would be required to produce the same number of articles in54 days?

The more the no of machines, the less days will be required to produce a given no of articles.

Therefore, the no of machines and no of days are in inverse proportion.

Hence,

42 × 63 = 54 × x { x be the no of machines required to produce a given no of articles in 54 days}

x = 49

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