bernie24 bernie24
  • 23-10-2018
  • Mathematics
contestada

Help me with this one

Help me with this one class=

Respuesta :

jcherry99
jcherry99 jcherry99
  • 23-10-2018

Answer:

Answer C

Step-by-step explanation:

Let the number be x

(30/100)*(20/100)x = (600 / 10000)x = 0.06 x

(40/100)*(y/100)*x = 0.06 x  You are solving for y

40y/10000x = 0.06 x   Divide both sides by x

40y / 10000 x/x = 0.06 x/x  The xs disappear

40 y / 10000 = 0.06      Multiply both sides by 10000

40 y = 0.06 * 10000

40y = 600                      Divide by 40

y = 600 / 40

y = 15

Answer C


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