A student,after his teacher's question, chose a number, multiplied it by 2, then subtracted 138 from the result and got 102. What was the number he chose? Choose the correct choice from the following
A) 344	B) 251	C) 411	D) 212	E) 120

Rationale: let x be the number he chose , then 2 ⋅ x − 138 = 102 2 x = 240 x = 120 correct answer is e ) 120
Answer: E