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Source: Veritas Prep
Two hoses (A and B) are filling a pool. Working alone at their individual constant rates Hose A fill the pool in 6 hours, and Hose B could do it in 4 hours. If the two hoses work together until half the pool is full, and then Hose B finishes the pool alone, what fraction of the pool will have been filled by Hose B?
A. 1/2
B. 3/5
C. 3/4
D. 4/5
E. 7/8
The OA is D
Two hoses (A and B) are filling a pool. Working alone at their individual constant rates Hose A fill the pool in 6 hours, and Hose B could do it in 4 hours. If the two hoses work together until half the pool is full, and then Hose B finishes the pool alone, what fraction of the pool will have been filled by Hose B?
A. 1/2
B. 3/5
C. 3/4
D. 4/5
E. 7/8
The OA is D
