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GRE Test Prep : Discrete Quantitative Comparison


Formats Quiz Review
Multiple choice

A gas cylinder has two vents, V1 and V2, for discharge. The cylinder empties in 7  minutes when only vent V1 is open. The cylinder empties in 4  minutes when both vent V1 and vent V2 are open. About how many minutes will the cylinder take to empty if only vent V2 is open?

  3.00

  9.33

  cannot be determined

  0.33

  2.55

  Half-n-half Clue

Question 1.


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