20 men can complete the work in 48 days .8 days after they started the work 12 more men joined them.in how many days the whole work wiil be comlete.
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5 days will be the answer
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20 men can complete the work in 48 days.
⇒ Total man-days needed for the project = 20 x 48 = 960
8 days of work = 8 x 20 = 160 man-days
⇒ Number of man-days needed to complete the project = 960 - 160 = 800
After 12 more men joined in
⇒ there are 20 + 12 = 32 men
Number of days needed = 800 ÷ 32 = 25 days.
Total number of days needed to complete the job = 8 + 25 = 33 days
Answer: 33 days
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