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NIELIT 2022 Feb Scientist C - Section D: 12

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If $25$ pumps can raise $2500$ tonnes of water in $20$ days, working $10$ hours a day, in how many days will $20$ pumps raise $1200$ tonnes of water, working $8$ hours a day?

  1. $7.5$ days
  2. $10$ days
  3. $15$ days
  4. $18$ days

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