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

To find the probability that Kelly's teacher will pick a card with a boy's name, we need to determine the ratio of the number of boys' cards to the total number of cards.

Given that there are 16 boys and 12 girls in the class, the total number of cards in the box is 16 + 12 = 28.

The probability of picking a boy's card is therefore the number of boys' cards divided by the total number of cards: 16 / 28 = 4/7.

Therefore, the correct answer is option B, 4/7.