Mathematics · Pipes and Cisterns
15 pipes, each having the same diameter, can fill a cistern in 12 minutes. How long will it take for 6 pipes, each with double the original diameter, to fill the same cistern at the same speed of flow?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 112 minutes
- 29.5 minutes
- 310 minutes
- 47.5 minutes✓
Correct answer
7.5 minutes
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