A contestant on a quiz show gets 150 points for every correct answer and loses 250 points for each incorrect answer. After answering 20 questions, the contestant has 200 points. How many questions has the contestant answered correctly? Incorrectly?

Question

cwrw238 · Answer

let x be the number of correct answers -  number of incorrect will be 20-x

so we can form an equation; -

150x - 250(20 - x) = 200
solve for x

cwrw238 · Answer

do you understand?  any questions?

anonymous · Answer

so x=13? 
13 answers were correct and 7 were incorrect?