68. A contractor undertook a contract to complete a part of a stadium in 9 months with a team of 560 persons. Later on

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68. 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?
05
Aug
68. 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? 68. A contractor undertook a contract to complete a part [...]
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