- A2.5 h
- B2 h
- C1.5 h
- D3 h
Step-by-Step Solution
The first third takes 1 h. The remaining at per hour takes 1 h. Total 2 h. (1.5 h assumes both inlets from the start.)
Answer: B) 2 h
A sump fills in 3 hours through its inlet. When it is one-third full, a second, identical inlet is also opened. How long does the whole filling take?
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