A teacher grades students’ tests by subtracting twice the number of incorrect responses from the number of correct responses. If Student A answers each of the 100 questions on her test and receives a score of 79, how many questions did Student A answer correctly?
Choose the most appropriate option: A) 55 B) 60 C) 93 D) 82 E) 91
let the number of correct responses be x   then the number of incorrect responses =100-x   according to question   x-2(100-x)=79 (subtracting twice of incorrect from correct)   3x=279   x=93   ANSWER:93
<result>C</result>
A teacher grades students’ tests by subtracting twice the number of incorrect responses from the number of correct responses. If Student A answers each of the 100 questions on her test and receives a score of 79, how many questions did Student A answer correctly?