parveramparshad226
parveramparshad226 parveramparshad226
  • 19-11-2018
  • Mathematics
contestada

15% of $9 is $_______ * Show Work *

12 is ___% of 200 * Show Work *

Respuesta :

djane10
djane10 djane10
  • 19-11-2018
when solving these types of equations, i usually use the phrase: criss-cross multiply, divide by the lonely guy lol

x=unknown number
15/100=x/9 solve for x
15*9=100x simplify
135=100x divide both sides by 100
135/100=x simplify
x= $1.35

x/100=12/200 solve for x
12*100=200x simplify
1200=200x divide both sides by 200
1200/200=x simplify
x= 6%
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