beapanda25
110

HELP ASAP !! the ratio of math students who use mechanical pencils to those that use regular pencils is 3/5 if 432 students use mechanical pencils how many students use regular pencils?

m=mechanical; r=regular Set up a proportion.  $\frac{3m}{5r} = \frac{432m}{r}$ 432*5=2160 2160/3=720  So the answer is 720 people :)