Math
posted by Jerald .
29.There are 16 boys and 12 girls in Kelly's class.Her teacher wrote the name of each student on a card and placed the cards in a box without looking the teacher chose a card from the box.What is the probability that Kelly's teacher will pick a card with a boy's name?
A.3/7
B.4/7
C.3/4
D.4/3
D

what is numberboys/totalstudents ?

4/7