jannarae052 jannarae052
  • 12-01-2017
  • Mathematics
contestada

Mei does 6 problems in 18 minutes. How many can she complete in 12 minutes

Respuesta :

helpmetnx helpmetnx
  • 12-01-2017
Do cross multiplication

  6  =  x
 18    12

Now cross multiply

(6)(12) = (18)(x)

       72 = 18x

Divide both sides by 18
     
    
     72  = 18x
     18      18

      4   = x

So tMei can complete 4 problems in 12 minutes.

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