Question 1074273
{{{267/p=2}}}, because , SOLD... 267 SOCIOLOGY TEXTBOOKS.  The description plainly gives the quantity of Sociology textbooks sold.   No variable needed for how many Sociology textbooks.


{{{system(p=133,OR,p=134)}}}

(Only whole number of books can be sold.)




*MAYBE BETTER*
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If the question were:
A textbook store sold a combined total of 267 sociology AND PHYSICS textbooks in a week. The number of sociology textbooks sold was two times the number of physics textbooks sold.


... then s for how many Sociology, p for how many of Physics;


{{{system(s+p=267,s/p=2)}}}


{{{2p+p=267}}}


{{{3p=267}}}


ANSWER:
{{{system(p=89,s=178)}}}