In a class 21 of students, 5 have a brother and 14 have a sister. There are 3 students who have a brother and a sister. What is the probability that a student has a sister given that they do not have a brother?

answer: i think one of the answer is $150 and $300?

step-by-step explanation:

answer: 7 x 2/5 = 2.8 hours, is your answer. your welcome! : 3

step-by-step explanation: first work out how long it took to hose 1/7 of the lawn which is 2/5 hours. times that by 7 to get the whole lawn.

sorry i don't know the other answer. i didn't learn what a proportional relationship is.

answer is b

step-by-step explanation:

1/2(2*4)=6 $$- agahajakanajak