On a scale from one to ten, Frog Company labels customers who gave the company a

score of 9 or 10 as promoters, customers who have the company a score of 7 or 8 as

passively satisfied, and customers who gave the company a score of 6 or less as

detractors. Frog Company asked 1,000 customers to give the company a score. Six

hundred customers indicated, by the score they assigned, that they were passively

satisfied. If the achieved net promoter score was 25% what is the number of promoters

and detractors in this survey?

a. 400 promoters and 100 detractors

b. 325 promoters and 75 detractors

c. 250 promoters and 150 detractors

the answer is b, how to solve it?