In the recent election for mayor, there were three candidates, Smith, Williams, and Krzyzewski. The ratio of Krzyzewski voters to Smith voters is the same as the ratio
of Smith voters to Williams voters. If there are 800 Krzyzewski voters and 200
Williams voters in my town, how many people voted in my town (assuming these
were the only 3 choices)?

An office supply company conducted a survey before marketing a new paper shredder designed for home use. in the survey, 80 % of the people who tried the shredder were satisfied with it. because of this high satisfaction rate, the company decided to market the new shredder. assume that 80 % of all people are satisfied with this shredder. during a certain month, 100 customers bought this shredder. find the probability that of these 100 customers, the number who are satisfied is 69 or fewer.