In 10 years, P will be as old as Q is now. Ten years ago, Q was twice as old as P was then. How old is P now?	Choose the correct choice from the following answers.
A) 15  B) 20  C) 25  D) 30  E) 35
Q = P+10   Q-10 = 2(P-10)   P = 2P-20   P = 20   The answer is 20.
<result>B</result>
In 10 years, P will be as old as Q is now. Ten years ago, Q was twice as old as P was then. How old is P now?