Question 33181
 In a equation ,to find a variable( here P) try to find if there is  any common  variable.here there is only one variable that is P.
 
  So, 5p-15p^2 = 0.
 
 can be written as 5p( 1 - 3p) = 0(just simplifying the equation- taking the variable p and number 5 as common outside,when u multiply the 5p with the numbers inside the brackets that gives u back the equation).

now equate the term 5p = 0 and 
                  1-3p =0

therefore the values of p are p =0

  1-3p=0 gives p=1/3


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