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BTGmoderatorLU
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Source: Magoosh
Pump X takes 28 to fill a pool. Pump Y takes 21 hours to fill the same pool. How long does it take them to fill the same pool if they are working simultaneously?
A. 7 hr
B. 10 hr
C. 12 hr
D. 14 hr
E. 18 hr
The OA is C
Pump X takes 28 to fill a pool. Pump Y takes 21 hours to fill the same pool. How long does it take them to fill the same pool if they are working simultaneously?
A. 7 hr
B. 10 hr
C. 12 hr
D. 14 hr
E. 18 hr
The OA is C
