Logical Reasoning

PT136 · S2 · Q22 The airport's runways are too close

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The airport's runways are too close to each other to allow simultaneous use of adjacent runways when visibility is poor, so the airport allows only 30 planes an hour to land in poor weather; in good weather 60 planes an hour are allowed to land.

Given

The airport's runways are too close to each other to allow simultaneous use of adjacent runways when visibility is poor.

The airport allows only 30 planes an hour to land in poor weather;

In good weather 60 planes an hour are allowed to land.

Because airline schedules assume good weather, bad weather creates serious delays.

22.

Which one of the following is most strongly supported by the information above?

  1. In poor weather, only half

    Too Strong

    The statements permit the possibility that one runway is completely shut down in bad weather and so the other runway has just as many planes landing each hour as it did before.

    13% picked this

  2. When the weather at the

    Too Strong

    This depends on how long it takes for each plane to land. More importantly, the part that says “at any given time” goes too far since it could be the case that planes are staggered on both runways such that it’s never the case that planes are landing on two adjacent runways at the same time.

    13% picked this

  3. If any two of the

    Unsupported Relationship

    In good weather simultaneous use of two runways does not lead to serious delays.

    1% picked this

  4. Correct

    Airlines using the airport base

    Why this is right

    Because airline schedules assume good weather (fourth statement) and 60 planes an hour are allowed to land in good weather (third statement), it follows that airline schedules assume that more than 30 planes an hour will be allowed to land.

    Skill tested: Most Supported · how this choice captures the argument's function is the move to repeat next time.

    69% picked this

  5. In good weather, there are

    Unsupported Relationship

    While good weather makes it less likely that there will be any seriously delayed flights, it does not go so far as to say that there will be no (or almost no) delayed flights.

    4% picked this

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