Question

Simin participated in a Maths quiz with 20 questions. For every correct answer, she was awarded 3 points. For every wrong answer, 2 points were deducted. If Simin scored 25 points for the quiz, how many questions did Simin answer correctly?

Answer 1

let x be correct answers and 2o-x becomes wrong
So, 3x - 2(20-x) = 25
Find x

Answer 2

kevin. chaithanya is right go for it....

Answer 3

Let the variable \(\rm w\) denote the number of correct answers. If \(\rm w\) answers are correct, then \(\rm 20 - w\) are wrong. Forming an equation, \(\rm 3w - 2(20 - w) = 25\) . Solve for \(\rm w\).