Question

X can do a piece of work in 20 days working 7 hours a day. The work is started by x and on the second day one more man whose capacity is twice that of x joined. On the third day another man whose capacity is thrice that of x joined and the process continues till the work is completed. In how many days will the work be completed, if everyone works for 4 hours a day

Answer 1

Answer:

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Answer 2

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