please solve this problem
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(rohan+sam)=1/6
rohan=1/15
1/15 +sam=1/6
sam=1/6 -1/15
sam=5-2/30
sam=3/30
sam=1/10
sam=10 hours
rohan=1/15
1/15 +sam=1/6
sam=1/6 -1/15
sam=5-2/30
sam=3/30
sam=1/10
sam=10 hours
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