A can copy 50 papers in 10 hours while both A & B can copy
70 papers in 10 hours. Then for how many hours
required for B to copy 26 papers?
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Answer Posted / amarjukuntla
A can copy 50 papers in 10 Hrs
A+B can copy 70 papers in 10Hrs
B can copy 26 papers in xHrs
i.e A+B-A=70-50=20papers in 10Hrs
Then 26 papers in xHrs
20papers in 10Hrs
x=260/20=13Hrs
So,B can copy 26 papers in 13Hrs.
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