there are 24 students in ms.woodalls class .1/2 of students are boys. 1/3 of the boys have brown hair.what is the number of boys in Ms.woodalls class who have brown hair?

First, let's find how many students are boys.  We do this by multiplying 24 by 1/2. 24*1/2=12.  Now, we find how many of the boys have brown hair.  We do this by multiplying the number of boys, 12, by 1/3. 12*1/3 = 4.  So, 4 boys have brown hair in Ms. Woodall's class.