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A contract is to be completed in 52 days and 125 identical robots were employed, each operational for 7 hours a day. After 39 days, five-seventh of the work was completed. How many additional robots would be required to complete the work on time, if each robot is now operational for 8 hours a day?

  1. 50
  2. 89
  3. 146
  4. 175
asked in General Aptitude by (21.2k points) 4 29 61
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