Math, asked by krishhingu, 9 months ago

In a competitive examination, one mark is awarded for each correct answer while 1/2 mark is deducted for every wrong answer. Jayanti answered 120 questions and got 90 marks. How many questions did she answer correctly?​

Answers

Answered by mg472564
1

Answer:

X=60,Y=60

Step-by-step explanation:

let the correct answer be x and the incorrect answer be y.

then, X + Y=120 and X+1/2Y=90

X+Y=120 and 2X+Y=180

Now, subtract these both equation ,we get

X=60 and Y=60

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