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Question 1
A boy can do a work in 20 days and a girl can do the same job in 30 days. Girl started working alone. After 5 days boy join her. 5 days before the work finished the girl left. For how long they worked together?
Question 2
‘A’ is thrice as good a workman as ‘B’ and takes 10 days less to do a piece of work than ‘B’ takes. The number of days taken by ‘B’ alone to finish the work is
Question 3
A tank can be filled by pipe X in 2 hours and pipe Y in 6 hours. At 10 a.m. pipe X was opened. At what time will the tank be filled if pipe Y is opened at 11 a.m.?
Question 4
A alone takes 4 days more than A and B together take to complete a task, while B takes 9 days more than A and B together take. If they work together, they can finish the task in:
Question 5
A man and a woman can do a piece of work in 60 days. A woman and a child can do the same piece of work in 120 days. If the man and the child work together they take 90 days to do the same work. What fraction of the work will be finished in 3 days if the man, woman and the child will work together?
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Jun 3CDS & Defence
