Of the 300 subjects who participated in an experiment using virtual-reality therapy to reduce their fear of heights...

Official Guide

Of the 300 subjects who participated in an experiment using virtual-reality to reduce their fear of heights, 40 percent experienced sweaty palms, 30 percent experienced vomiting, and 75 percent experienced dizziness. If all of the subjects experienced at least one of these effects and 35 percent of the subjects experienced exactly two of these effects, how many of the subjects experienced only one of these effects?

A. 105
B. 125
C. 130
D. 180
E. 195

OA D

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