Question

In a competitive examination, 5 marks are awarded for cach correct answer, while 2 marks
are deducted for cach wrong answer. Vidhya answered 120 questions and got 348 marks. How
many questions did she answer correctly?
​

Answer 1

Answer:

84 correct and 36 wrong

Step-by-step explanation:

let us assume that the no of correct answers be 'x' and wrong answers be'y'

then, x+y=120

5x-2y=348 according to the given conditions.

solving equation.1

x=120-y

then putting this value in equation.2

5(120-y)-2y=348

600=5y-2y=348

-7y=348-600= -252

y=-252/-7= 36

so, x=120-36=84

therfore, Vidhya answered 84correct and 46 wrong

hope it helps you

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