Question

24 men working at 8 hours per day can do a piece of work in 15 days. In how many days
can 20 men working at 9 hours per day can complete the same work?
1​

Answer 1

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24 men working 8 hrs / day can do a piece in 15 days 

∴ Total work units =24×8×15

= 2880

No.of days required by 20 men, working at 

a hrs/day = 2880/20×9

16 days