contestada

Joel has twice as many CDs as Mariella has. Subtracting 7 from the number of CDs Joel has and dividing by 3 equals the number of CDs Blake has. If Blake has 25 CDs, how many CDs does Mariella have?

Respuesta :

41...
guess, Joel has x CDs.
so,
   [tex] \frac{x-7}{3} =25[/tex]
or,x =82
again,mariella have [tex] \frac{82}{2} [/tex]
                                 =41    
Blake has 25 CD's. I know that 75 divided by 3 is 25 but you had to subtract 7 from the number of CD's Joel had before you divided by 3, so you would have to add 7 to the 75 to get the number of CD's Joel has .Then you would multiply 82 and 2 to get Mariella's total CD's which is 164.