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When working independently, machine \(A\) can complete a piece of work in \(10\) hours, and machine \(B\) can complete the same work in \(6\) hours. Both machines worked together for \(3\) hours, and then Machine \(A\) stopped working. How much more time did machine \(B\) take to complete the remaining work?
A. 1 hour
B. 1 hours 12 minutes
C. 1 hour 20 minutes
D. 1 hour 48 minutes
E. 2 hours
Answer: B
Source: e-GMAT
A. 1 hour
B. 1 hours 12 minutes
C. 1 hour 20 minutes
D. 1 hour 48 minutes
E. 2 hours
Answer: B
Source: e-GMAT
