defence exam Indian Navy Chargeman/Draughtsman Mock Test 2023 Quantitative Aptitude Time and Work Pipe and Cistern
An inlet pipe can fill an empty tank in 140 hours while an outlet pipe drains a completely-filled tank in 63 hours. If 8 inlet pipes and y outlet pipes are opened simultaneously, when the tank is empty, then the tank gets completely filled in 105 hours. Find the value of y.
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