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A person goes to work across three intersections. The probability of seeing the red light at the first intersection is 60%, the probability of seeing the red light at the second intersection is 70%, and the third intersection is 80%. Calculate the probability of the person walking without a red light

Respuesta :

luckybaby0905
  1. add together all (3) percentages                                                                        60+70+80=210
  2. subtract the answer from 300 (300 because there were 3 percentages)   300-210=90
  3. divide this answer by 3 (also because there were 3 percentages)            90/3=30
  4. the probability of the person walking without a red light is 30%

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