Question 422381
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Hi
36 more pine than oak
Let x and (x+36) represent the number of oak and pine respectively
Question states***
  4/10 = x/(x+36)
   10x = 4(x+36)
    6x = 4*36
     x = 4*36/6
     x = 24, the number of oaks.  60 pine. (24-36)

CHECKING our Answer***  
   24/60 = 4/10