A contractor undertook a contract to complete a part of a stadium in 9 months with a team of 560 persons. Later on , it was required to complete the job in 5 months. How many extra persons should he employ to complete the work
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In 9 months, a part of stadium can complete by 560 persons. ∴ In 1 month, the work can be complete by 9 × 560 = 5040 persons. ∵ In 5 months, the work can be complete by 5040/5 = 1008 persons.
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