Time & work problems 6

Time & work problems 6 (with easy way of solving )

Q 1) A and B complete a piece of work in 24 days & 36 days respectively.They start the work but 3 days before completion of work,A left.In how many days will the total work be completed ?

Q 2) A can complete a piece of work in 9 days and B in 12 days respectively.If they work or a day alternately,In how many days the total work would be finished ,If A begins the work ?

Q 3) Seven men and four boys can complete a work in 6 days.A man completes double the work as that of a boy.In how many days will 5 men and 4 boys complete the work ?

Q 4) 2 men or 4 women can do a piece work in 28 days.In how many days 4 men and 8 women can do the same piece of work ?

Q 5) A man undertakes to do a certain work in 150 days.He employs 200 men.He finds that only a quarter of the work is done in 50 days.The number of additional men that should be appointed so that the whole work will be finished in time ?

Time taken : (HH : MM :SS)

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