Posted by melissa on .
a math professor is teachin two classes. The first class has 100 student enrolled and the second class has 75 estudent enrolled if 3/4 estudent of the first class pass and 2/5 student of the second class pass. how many estydent pass in total

prealgebra 
Reiny,
what is
(3/4)(100) + (2/5)(75) ?