A student chose a number, multiplied it by 2, then subtracted 200 from the result and got 110. What was the number he chose?
Answers: A) 168 B) 100 C) 155 D) 160 E) 200
Solution:   Let x be the number he chose, then   2*x*200 =110   2x=310   x=155   correct answer 155
<result>C</result>
A student chose a number, multiplied it by 2, then subtracted 200 from the result and got 110. What was the number he chose?