In a tes(+4) marks are given for every correct answer and (-2) marks for every wrong answer .Rohit answered all the questions and scored 68 marks .25 of Rohit,s answers were correct how many of the question he attempted were incorrect ,?
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Step-by-step explanation:
Rohit answered all questions.
Correct ans. by Rohit = 25.
Each correct ans. = 4
So Rohit got = 25 * 4 = 100 marks.
But Rohit got 68 marks in the test.
Each incorrect ans = -2 marks.
So no. of incorrect ans. given by Rohit = (100 - 68)/2 = 32/2 = 16 Ans.
therefore rohit got 16 marks
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