Kate likes to walk down moving escalators and she takes one step at a time. when she walks down at a rate of 2 steps per second, she reaches the bottom from top after 18 steps. when she is exhausted she will walk down at a rate of 1 step per second and she will reach bottom from top after 12 steps. find the time taken for her to reach bottom from top if she just stands on escalator?​

i would say b. research typically uses a variety of sources

american political culture includes a plenty of focus views and preferences. not all westerns experience the same opinions, of course, but the large preponderance promises to these general ideas, including equality, justice, freedom, individualism, integrity, and difference.

the united states is a democratic republic. residents elect representatives to governmental, nation, and local administration; those deputies create the regulations that command u.s. community. although emptiness in u.s. law needs it, in usage, the administrative system is ruled by executive factions.