Pipes and Cistern 1 online test, online practice test, exam, quiz

Pipes and Cistern 1 Online Test

The purpose of this online test is to help you evaluate your Pipes and Cistern 1 knowledge yourself. These Multiple Choice Questions (MCQs) on Pipes and Cistern 1 will prepare you for technical round of job interview, written test and many certification exams.

The test contains 20 questions and there is no time limit. You will get 1 point for each correct answer. You will get your online test score after finishing the complete test.
(Total 20 questions)        (Time spent 0:0)

1. Two inlets X and Y can fill a tank in 12 minutes and 16 minutes respectively. If both the inlets open together after how much time should be y closed so, that the tank is full in 9 minutes?

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