Of a total of 100 buses operated within a particular town, 48 usually run on time and 36 of these buses are owned by jerry. of the 52 buses that usually run behind schedule, only 7 are owned by jerry. the probability that a bus is owned by jerry, given that it runs on time, is %. the probability that a bus is owned by jerry, given that it runs late, is

Best answer that i found on yahoo ok   set :   x= length of 2nd piece in cm  x- 3= length of 1st piece in cm  x-4= length of 3rd piece in cm  then since you know they all came from the 20 cm ribbon you add them together and set them equal to 20x+ x-3 +x-4 = 20  3x - 7= 20  3x= 27  x= 9  the shortest piece is the third piece which is x- 4  x-4  9-4 = 5  the length of the smallest piece is 5 cm.  the other lengths are  9 cm  6 cm

B-simple yes/no questions

2xy/9 is the answer to this problem