P, Q and R can finished a task in 8, 10 and 12 hours respectively. they started working together but after 3 hours p and r left . How long q take to finish the task now
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1) May be 7 hrs because Q have finished the first task in 10hrs.So,after 3hrs Q will take
10-3=7
2) May be no time because all P, Q and R have already finished the work
May be this will help you.
Thank you.
10-3=7
2) May be no time because all P, Q and R have already finished the work
May be this will help you.
Thank you.
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