n 10 years, A will be twice as old as B was 10 years ago. If A is now 9 years older than B the present age of B is  Choose the correct choice from the following answers:  A) 22  B) 897  C) 268  D) 20  E) 48

Rationale: a + 10 = 2 ( b - 10 ) . . . . . . . . ( 1 ) a = b + 9 . . . . . . . . . ( 2 ) from equations . 1 & 2 we get b = 39 a will be 39 + 9 = 48 years old . answer : e
Answer: E