Find the volume of the composite solid of the rectangle on the bottom with a width of 2 a length of 6 and a height of 3. And the pyramid on top with a height of 4. Please help!

What you do is you find the common denominator between the two fractions given.  the easiest is to just multiply them 

6*8=48

and then multiply each numerator by the number it's denominator is multiplied by

1*8=8  and 5*6=30

and now you have your new fractions, add them together

8/48+30/48=38/48

this leaves 10/48 as the people who were wearing shorts,  just simplify this and it's done

10/2    =5/24
48/2