P could finish 2/5 work in 4 day' and Q could finish 3/5same work in 9 days.they worked together for 5 days and then P left. The remaining work was done by Q. Find the time
required by Q to finish the remaining work
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Answer:
13 3/4
Step-by-step explanation:
P could finish 2/5 work in 4 day'
1 work in 20 days
Q could finish 3/5 same work in 9 days
1 work in 15 days
LCM of 20,15 is 60
they worked for 5 days
5/60=1/12
remaining work is 1-1/12=11/12
11/12 work will be completed by Q
11/12*15 = 55/4=>13 3/4
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