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Math·Algebra·Linear inequalities in one or two variables
medium
For the first 10 seconds of an experiment that lasts 100 seconds, a particle travels at a speed that is at least 4 meters per second and is at most 8 meters per second. For the remainder of the experiment, the particle travels at a constant speed of 12 meters per second. Which of the following is a possible number of meters the particle traveled in the first 70 seconds of the experiment?
A
725
B
766
C
801
D
840