Question

How long will 50men take to do the same job, that to 40men do in 28 days? ​

Answer 1

Answer:

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Step-by-step explanation:

Work completed by 1 men in 1 day = 1/ (28 × 50) = 1/1400

Work completed by 50 men in 1 day = 50 × (1/1400) = 1/28

Work completed by 50 men in first 10 days = 10/28 = 5/14

Work completed by 40 men in next 10 days = 10 × 40 × (1/1400) = 4/14

Work completed by 30 men in next 10 days = 10 × 30 × (1/1400) = 3/14

Work completed by 20 men in next 10 days = 10 × 20 × (1/1400) = 2/14

Time taken to complete the work = 40 days as 5/14 + 4/14 + 3/14 + 2/14 = 1