bob and alice can finish a job together in 3 hours . if bob can do the job by himself in 5 hours , what percent of the job does alice do ?
1. 20%
2.30%
3.40%
4.50 %
5.60 %
1. 20%
2.30%
3.40%
4.50 %
5.60 %
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pradeepkaushal9518
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