Bmayfield
contestada

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?

Respuesta :

m=mechanical; r=regular

Set up a proportion. 

[tex] \frac{3m}{5r} = \frac{432m}{r} [/tex]
432*5=2160
2160/3=720 

So the answer is 720 people :)

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