Number of correct answers!
A student appeared for a maths exam. He was given 100 problems to solve. He tried to solve all of them correctly but some of them went wrong. Any how he scored 85.
His score was calculated by subtracting two times the number of wrong answers from the number of correct answers.
Can you tell how many problems he solved correctly?
His score was calculated by subtracting two times the number of wrong answers from the number of correct answers.
Can you tell how many problems he solved correctly?
Replies
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Morningdot HabluLet no of wrong answer=x.
so no of correct answer=(100-x).
(100-x)-2x=85.
100-85=3x.
x=5.
so the no of correct answer=100-5=95. -
Tejashree Katdare
Your solution to this is correctmohit007kumar00Let no of wrong answer=x.
so no of correct answer=(100-x).
(100-x)-2x=85.
100-85=3x.
x=5.
so the no of correct answer=100-5=95.
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