15 men can complete a work in 12 days they start work together. In how

1.	15 men can complete a work in 12 days they start work together. In how many days the total work will be finished when(1) After 4 days 5 more men join the work.(2) After 4 days 5 men left the work.
Answer» Answer: 15 men can do the work in 12days. After 4 days remains work of 8days. If 15 men can do that in (12-4) 8 days Then 1 man can do in 15x8= 120 days. After 4days 5 more men joins the work So total (15+5) 20 men can do the rest work (120÷20)= 6 days. ANS.

15 men can complete a work in 12 days they start work together. In how many days the total work will be finished when(1) After 4 days 5 more men join the work.(2) After 4 days 5 men left the work.

Answer»

Answer:

15 men can do the work in 12days.

After 4 days remains work of 8days.

If 15 men can do that in (12-4) 8 days

Then 1 man can do in 15x8= 120 days. After 4days 5 more men joins the work

So total (15+5) 20 men can do the rest work (120÷20)= 6 days. ANS.

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15 men can complete a work in 12 days they start work together. In how many days the total work will be finished when(1) After 4 days 5 more men join the work.(2) After 4 days 5 men left the work.​

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15 men can complete a work in 12 days they start work together. In how many days the total work will be finished when(1) After 4 days 5 more men join the work.(2) After 4 days 5 men left the work.