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MATH / An airplane climbs 100 feet during the first second after takeoff. In each…

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problem

An airplane climbs 100 feet during the first second after takeoff.  In each succeeding second it climbs 100 feet more than it climbed during the previous second.  How many  seconds does it take for the plane to reach an altitude of   12,000 feet above its takeoff height?

level

Level 5

type

Algebra

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task_id: e79d4132-ac3e-59d3-b69b-c3916f1df1af
task_key: algebra--test--e79d4132-ac3e-59d3-b69b-c3916f1df1af
task_revision_id: 2
config / split: algebra / test

Official source

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