SOLUTION: In a particular class, 72% of the students have black hair. Five black-haired students leave the class, so that now 65% of the students have black hair. How many students were orig

Algebra ->  Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: In a particular class, 72% of the students have black hair. Five black-haired students leave the class, so that now 65% of the students have black hair. How many students were orig      Log On


   

Question 1107464: In a particular class, 72% of the students have black hair. Five black-haired students leave the class, so that now 65% of the students have black hair. How many students were originally in the class?
Answer by ikleyn(52771) About Me  (Show Source):
You can put this solution on YOUR website!
.
%280.72x+-+5%29%2F%28x-5%29 = 0.65.


Solve for x, which is the number of students originally in the class.