- APipe C
- BPipe D
- CPipe B
- DPipe A
Step-by-Step Solution
5 h needs per hour. Closing D: ✓. Closing C gives h); closing B gives (20 h); closing A, the tank never fills.
Answer: B) Pipe D
The empty tank has four pipes, as shown. Exactly ONE pipe must be kept closed so that the tank fills in exactly 5 hours. Which pipe should be closed?
Class 8Leaks and Changing PipesDirect and Inverse Proportions
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